It’s funny how some dishes just have this magical ability to transport you. For me, Potato Leek Soup is one of those recipes. The first time I made it, following Jennifer Segal’s recipe, I was instantly captivated. The creamy texture, the delicate sweetness of the leeks, and the comforting earthiness of the potatoes – it was a symphony of flavors that warmed me from the inside out. My family, usually a tough crowd to please when it comes to soups, absolutely devoured it. Even my youngest, who is famously picky about vegetables, asked for seconds! This isn’t just any soup; it’s a hug in a bowl, perfect for chilly evenings or whenever you need a little culinary comfort. This recipe is a testament to the beauty of simplicity; with just a handful of humble ingredients, you can create something truly extraordinary. Let’s dive into what makes this Potato Leek Soup recipe so special and how you can easily recreate this French classic in your own kitchen.
Ingredients
The beauty of Potato Leek Soup lies in its simplicity, relying on a few key ingredients to create a dish that is both comforting and elegant. Each component plays a vital role in building the flavor profile and texture of this classic soup. Let’s break down each ingredient and understand why it’s essential to this recipe.
- 3 tablespoons unsalted butter: Butter is the foundation of flavor in this soup. Unsalted butter is preferred as it gives you complete control over the saltiness of the final dish. The butter provides richness and a velvety texture as it melts and coats the leeks and garlic in the initial stages of cooking. It also contributes to a subtle nutty flavor as it gently browns while sautéing the aromatics. Using a good quality butter will significantly enhance the overall taste of the soup. For those seeking a dairy-free or vegan option, high-quality olive oil can be substituted, though it will impart a slightly different flavor profile.
- 4 large leeks, white and light green parts only, roughly chopped (about 5 cups): Leeks are the star of this soup, lending their delicate, onion-like flavor that is sweeter and milder than regular onions. It’s crucial to use only the white and light green parts of the leek, as the darker green parts can be tougher and more fibrous. Properly cleaning leeks is paramount as they tend to trap soil and grit between their layers. To clean them effectively, slice them lengthwise, then rinse them thoroughly under cold running water, making sure to separate the layers to remove any hidden dirt. Roughly chopping them ensures they cook down evenly and release their flavor into the butter and broth. The quantity, about 5 cups, is essential for achieving the signature leek flavor that defines this soup.
- 3 cloves garlic, peeled and smashed: Garlic is the aromatic backbone of many savory dishes, and it plays a supporting but crucial role in Potato Leek Soup. Smashed garlic cloves are used rather than minced or chopped, as this allows for a gentler infusion of garlic flavor into the butter and leeks without overpowering the delicate taste of the leeks. Smashed garlic releases its aromatic oils more slowly, creating a subtle background note that complements the sweetness of the leeks and the earthiness of the potatoes. For those sensitive to garlic, you can reduce the amount to 2 cloves or even omit it entirely, although it does contribute a layer of depth to the soup.
- 2 pounds Yukon Gold potatoes, peeled and roughly chopped into ½-inch pieces: Yukon Gold potatoes are the ideal choice for this soup due to their creamy texture and slightly buttery flavor. Their lower starch content compared to Russet potatoes prevents the soup from becoming overly thick or gluey. Peeled potatoes ensure a smooth and refined texture in the final puréed soup. Chopping them into ½-inch pieces is important for even cooking and ensuring they become tender in the specified cooking time. The size also facilitates quick cooking and easy blending. While Yukon Golds are recommended, other waxy potatoes like red potatoes can also be used, though they may result in a slightly different texture.
- 7 cups chicken or vegetable broth: Broth is the liquid base of the soup and significantly impacts its overall flavor. Chicken broth adds a richer, more savory depth, while vegetable broth keeps the soup vegetarian and lighter. Using a good quality broth is key to achieving a flavorful soup. Homemade broth is always superior, but high-quality store-bought broth, preferably low-sodium, is a convenient alternative. Low-sodium broth allows you to control the salt level of the soup more precisely. The 7 cups of broth provide the perfect liquid-to-solid ratio, creating a soup that is neither too thick nor too thin.
- 2 bay leaves: Bay leaves are aromatic leaves that infuse a subtle, slightly peppery, and herbaceous flavor into the soup as it simmers. They are essential for adding depth and complexity without being overpowering. Dried bay leaves are commonly used and readily available. It’s crucial to remove the bay leaves before puréeing the soup, as they are not edible and can have a slightly bitter taste if left in. Two bay leaves are sufficient to impart their flavor without dominating the other ingredients.
- 3 sprigs fresh thyme: Fresh thyme adds a bright, earthy, and slightly lemony note to the soup, complementing the leeks and potatoes beautifully. Fresh thyme is preferred over dried thyme for its more vibrant and aromatic flavor. Using sprigs allows for easy removal before puréeing. The thyme infuses its flavor into the broth as the soup simmers, adding a layer of herbaceousness that enhances the overall complexity of the dish. If fresh thyme is unavailable, you can substitute with ½ teaspoon of dried thyme, but fresh is highly recommended for the best flavor.
- 1 teaspoon salt: Salt is a crucial seasoning that enhances all the flavors in the soup. The recipe calls for 1 teaspoon of salt, but it’s important to season to taste throughout the cooking process. The amount of salt needed may vary depending on the saltiness of the broth used. It’s best to start with the recommended amount and then adjust as needed after simmering and before adding the cream. Salt not only enhances flavor but also balances the sweetness of the leeks and the earthiness of the potatoes.
- ¼ teaspoon ground black pepper: Black pepper adds a subtle warmth and a hint of spice that complements the other flavors in the soup. Freshly ground black pepper is always preferable for its more pungent and aromatic qualities. The ¼ teaspoon is a starting point, and you can adjust to your preference. Pepper adds a subtle layer of complexity and prevents the soup from being overly one-dimensional.
- 1 cup heavy cream: Heavy cream is the ingredient that transforms this soup from a simple vegetable broth into a luxuriously creamy and decadent dish. It adds richness, smoothness, and a velvety texture that elevates the soup to another level. Adding the cream at the end, just before simmering, ensures it doesn’t curdle. While heavy cream is traditionally used, you can substitute with half-and-half for a slightly lighter version, or for a vegan option, full-fat coconut milk or cashew cream can be used, though they will impart a slightly different flavor.
- Chives, finely chopped, for serving: Fresh chives are the perfect garnish for Potato Leek Soup. They add a pop of fresh, mild onion flavor and a vibrant green color that contrasts beautifully with the creamy white soup. Finely chopped chives are sprinkled over the soup just before serving, adding a final touch of freshness and visual appeal. Other garnishes can also be used, such as croutons, a swirl of olive oil, or a sprinkle of crispy bacon, but chives are a classic and elegant choice.
Instructions
Creating this comforting Potato Leek Soup is a straightforward process, even for novice cooks. Each step is designed to build flavor and texture, culminating in a creamy and delicious soup. Let’s break down each instruction step-by-step, providing more detail and tips to ensure your soup turns out perfectly every time.
- Melt the butter over medium heat in a large soup pot. Add the leeks and garlic and cook, stirring regularly, until soft and wilted, about 10 minutes. Adjust the heat as necessary so as not to brown.
- Melt the butter over medium heat in a large soup pot: Start by selecting a large, heavy-bottomed soup pot or Dutch oven. This type of pot ensures even heat distribution, preventing hot spots and scorching. Melt the butter over medium heat. You want the butter to melt gently without browning at this stage. The melted butter creates the base for sautéing the aromatics and infusing the soup with richness.
- Add the leeks and garlic: Once the butter is melted and shimmering, add the chopped leeks and smashed garlic cloves to the pot. Ensure the leeks are evenly distributed in the pot to cook uniformly.
- Cook, stirring regularly, until soft and wilted, about 10 minutes: This is a crucial step for developing the flavor of the soup. Sautéing the leeks and garlic in butter over medium heat softens them, mellows their raw flavors, and releases their aromatic compounds. Stir regularly to prevent sticking and ensure even cooking. “Soft and wilted” means the leeks should become translucent and tender, losing their raw texture. Avoid browning the leeks and garlic; you want them to gently soften and become fragrant. If they start to brown too quickly, reduce the heat to medium-low. This process typically takes about 10 minutes, but it can vary depending on the heat and the size of your pot.
- Add the potatoes, broth, bay leaves, thyme, salt and pepper to pot and bring to a boil. Cover and turn the heat down to low. Simmer for 15 minutes, or until the potatoes are very soft.
- Add the potatoes, broth, bay leaves, thyme, salt and pepper to pot: Once the leeks and garlic are softened, add the chopped potatoes, chicken or vegetable broth, bay leaves, thyme sprigs, salt, and black pepper to the pot. Ensure all the ingredients are added in this order to layer the flavors.
- Bring to a boil: Increase the heat to medium-high and bring the mixture to a boil. Boiling ensures that the flavors start to meld together and the potatoes begin to cook.
- Cover and turn the heat down to low: Once the soup reaches a boil, reduce the heat to low, cover the pot with a lid, and let it simmer gently. Simmering allows the potatoes to cook through and become very tender while also allowing the flavors to deepen and develop. Covering the pot helps to trap the steam and cook the potatoes more efficiently.
- Simmer for 15 minutes, or until the potatoes are very soft: Simmer the soup for approximately 15 minutes, or until the potatoes are fork-tender and easily mashable. The cooking time may vary depending on the size of the potato pieces and the heat of your simmer. Check for doneness by piercing a potato piece with a fork; it should slide in easily with no resistance. “Very soft” potatoes are essential for achieving a smooth and creamy puréed soup.
- Fish out the thyme sprig and bay leaves, then purée the soup with a hand-held immersion blender until smooth. (Alternatively, use a standard blender to purée the soup in batches; see note.)
- Fish out the thyme sprig and bay leaves: Before puréeing the soup, it’s crucial to remove the thyme sprigs and bay leaves. These aromatic herbs have imparted their flavor, and they are not meant to be consumed. Use tongs or a slotted spoon to carefully remove them from the soup and discard them.
- Purée the soup with a hand-held immersion blender until smooth: The next step is to purée the soup until it is completely smooth and creamy. An immersion blender is the easiest and most convenient tool for this as it allows you to purée the soup directly in the pot, minimizing mess and cleanup. Insert the immersion blender into the soup pot and blend in an up-and-down motion until the soup is velvety smooth with no lumps. Be careful to keep the blender head submerged to avoid splattering hot soup.
- (Alternatively, use a standard blender to purée the soup in batches; see note.): If you don’t have an immersion blender, you can use a standard countertop blender. However, it’s essential to purée the soup in batches to avoid overfilling the blender and causing hot soup to splatter. Carefully ladle hot soup into the blender jar, filling it no more than halfway. Secure the lid tightly and place a kitchen towel over the lid to prevent hot soup from escaping. Start blending on low speed and gradually increase to high until smooth. Pour the puréed soup into a clean pot or bowl and repeat with the remaining soup. Note: Always be extremely cautious when blending hot liquids in a standard blender to prevent burns.
- Add the heavy cream and bring to a simmer. Taste and adjust seasoning with salt and pepper. If soup is too thin, simmer until thickened. If it’s too thick, add water or stock to thin it out. Garnish with fresh herbs if desired.
- Add the heavy cream: Once the soup is puréed to a smooth consistency, stir in the heavy cream. The cream adds richness, luxuriousness, and a beautiful velvety texture to the soup.
- Bring to a simmer: Return the pot to medium-low heat and gently bring the soup back to a simmer. Simmering for a few minutes after adding the cream helps to meld the flavors and slightly thicken the soup. Avoid boiling the soup after adding cream, as it can cause the cream to curdle or separate.
- Taste and adjust seasoning with salt and pepper: This is a crucial step to ensure the soup is perfectly seasoned to your taste. Taste the soup and add more salt and pepper as needed. Remember that flavors can change as the soup cools, so it’s best to season it to taste while it’s warm.
- If soup is too thin, simmer until thickened: If the soup is thinner than desired, continue to simmer it uncovered over low heat. Simmering allows excess liquid to evaporate, concentrating the flavors and thickening the soup naturally. Stir occasionally to prevent sticking.
- If it’s too thick, add water or stock to thin it out: If the soup is too thick, you can thin it out by adding a little water or chicken/vegetable broth. Add liquid gradually, stirring after each addition, until you reach your desired consistency.
- Garnish with fresh herbs if desired: Finally, ladle the hot soup into bowls and garnish with finely chopped fresh chives. Garnishes add a touch of freshness, flavor, and visual appeal. Other garnish options include a swirl of cream, croutons, a drizzle of olive oil, or a sprinkle of crispy bacon.
Nutrition Facts
(Per serving, approximate and may vary based on specific ingredients and brands)
- Servings: 6
- Calories per serving: Approximately 350-450 calories
This approximate calorie count is based on the ingredients listed in the recipe and standard nutritional values. The calorie content can vary depending on the specific brands of broth and cream used, as well as the size of the leeks and potatoes. A single serving of this Potato Leek Soup provides a comforting and moderately calorie-dense meal.
Detailed Nutritional Breakdown (Approximate per serving):
- Calories: 350-450 kcal
- Protein: 6-8 grams
- Fat: 25-35 grams
- Saturated Fat: 15-20 grams
- Unsaturated Fat: 5-10 grams
- Cholesterol: 80-100 mg
- Carbohydrates: 25-35 grams
- Fiber: 3-5 grams
- Sugar: 5-8 grams (naturally occurring from vegetables and dairy)
- Sodium: 500-700 mg (can vary greatly depending on broth used)
- Potassium: 500-700 mg
- Vitamin C: 20-30% DV (Daily Value)
- Vitamin B6: 15-20% DV
- Iron: 5-8% DV
Nutritional Highlights:
- Good Source of Vitamins: Potatoes and leeks provide Vitamin C and Vitamin B6, important for immune function and energy metabolism.
- Source of Fiber: Potatoes and leeks contribute dietary fiber, which aids in digestion and promotes satiety.
- Potassium Rich: Potatoes are a good source of potassium, an important electrolyte for heart health and blood pressure regulation.
- Comforting and Satisfying: The combination of carbohydrates, fats, and protein in this soup makes it a satisfying and comforting meal, perfect for cooler weather.
Considerations for Health-Conscious Eaters:
- Fat Content: The soup is relatively high in fat due to the butter and heavy cream. To reduce the fat content, you can substitute half-and-half or even milk for the heavy cream, although this will result in a less creamy texture. You can also reduce the amount of butter slightly.
- Sodium Content: Pay attention to the sodium content of the broth you use. Opt for low-sodium or no-salt-added broth to control the sodium levels in the soup.
- Vegetarian/Vegan Options: The recipe can easily be made vegetarian by using vegetable broth. For a vegan version, substitute olive oil for butter and full-fat coconut milk or cashew cream for heavy cream.
While Potato Leek Soup is not a low-calorie or low-fat dish, it can be enjoyed as part of a balanced diet. Its nutritional benefits come from the vegetables and broth, providing essential vitamins and minerals. Enjoy it in moderation as a comforting and flavorful meal.
Preparation Time
This Potato Leek Soup is relatively quick and easy to prepare, making it a great option for weeknight dinners or weekend lunches. Here’s a breakdown of the preparation time:
- Prep Time: 25 Minutes
- This includes the time required to:
- Wash and clean the leeks thoroughly. This is the most time-consuming part of the prep work, as leeks need to be carefully rinsed to remove any grit.
- Peel and roughly chop the potatoes into ½-inch pieces.
- Peel and smash the garlic cloves.
- Measure out all other ingredients, including butter, broth, cream, seasonings, and garnishes.
- Chop the chives for garnish.
- Tips to Speed Up Prep Time:
- Pre-wash leeks: If you are very short on time, you can wash the leeks a day ahead and store them in the refrigerator. However, it’s best to chop them just before cooking to maintain freshness.
- Use pre-peeled garlic: While fresh garlic is always best, using pre-peeled garlic cloves can save a minute or two.
- Efficient chopping: Practice your knife skills to chop vegetables quickly and efficiently. A sharp knife is essential for faster and safer chopping.
- Organize your mise en place: Having all your ingredients prepped and measured out before you start cooking (mise en place) will make the cooking process smoother and faster.
- This includes the time required to:
- Cook Time: 40 Minutes
- This includes the time required for:
- Sautéing the leeks and garlic in butter (approximately 10 minutes).
- Simmering the soup with potatoes, broth, and seasonings until the potatoes are very soft (approximately 15-20 minutes).
- Puréeing the soup with an immersion blender or standard blender (a few minutes).
- Simmering the soup again after adding the heavy cream (approximately 5-10 minutes).
- Factors Affecting Cook Time:
- Potato size: Smaller potato pieces will cook faster than larger pieces.
- Simmering heat: Maintaining a gentle simmer is key for tender potatoes. A too-high heat might cause the liquid to evaporate too quickly before the potatoes are fully cooked.
- Pot type: A heavy-bottomed pot will distribute heat more evenly and may slightly reduce cooking time compared to a thin-bottomed pot.
- This includes the time required for:
- Total Time: 1 Hour 5 Minutes
- This is the sum of the prep time and cook time. From start to finish, you can have a delicious and comforting bowl of Potato Leek Soup ready in just over an hour. This makes it a manageable recipe for a weeknight meal or a leisurely weekend lunch.
Overall, the preparation and cooking process for Potato Leek Soup is relatively straightforward and doesn’t require advanced culinary skills. The majority of the time is spent on gentle cooking, allowing the flavors to develop and the potatoes to become perfectly tender.
How to Serve
Potato Leek Soup is incredibly versatile and can be served in various ways, making it suitable for different occasions and meal types. Here are some ideas on how to serve this delightful soup:
- Classic and Simple:
- Serve hot in bowls: Ladle the soup into warm bowls as a comforting starter or a light lunch.
- Garnish with fresh chives: A sprinkle of finely chopped fresh chives is the classic and most elegant garnish, adding a fresh oniony note and a pop of color.
- Crusty bread on the side: Serve with a slice of crusty bread, baguette, or sourdough for dipping and soaking up the delicious soup. The bread adds a textural contrast and makes the meal more substantial.
- Elevated Garnishes:
- Swirl of cream or crème fraîche: Add a swirl of heavy cream, crème fraîche, or sour cream on top of each bowl for extra richness and visual appeal.
- Drizzle of olive oil: A drizzle of high-quality extra virgin olive oil adds a fruity and peppery note and a beautiful sheen to the soup.
- Crispy croutons: Homemade or store-bought croutons provide a satisfying crunch and textural contrast to the creamy soup. Season the croutons with herbs or garlic for extra flavor.
- Crispy bacon or pancetta: For a non-vegetarian option, sprinkle crispy crumbled bacon or pancetta over the soup for a salty and smoky flavor contrast.
- Shredded cheese: A sprinkle of grated Gruyère, Parmesan, or cheddar cheese can add a savory and cheesy element to the soup.
- Meal Pairings:
- Light lunch: Serve a bowl of Potato Leek Soup as a light and satisfying lunch, paired with a simple green salad.
- Starter for a dinner party: Offer Potato Leek Soup as an elegant and comforting starter for a dinner party. It pairs well with a variety of main courses, from roasted chicken to fish or vegetarian dishes.
- Accompaniment to sandwiches or salads: Serve a smaller portion of soup alongside a sandwich, quiche, or a larger salad for a more complete and balanced meal.
- Hearty winter meal: Pair Potato Leek Soup with a grilled cheese sandwich or a hearty salad like a Cobb salad for a warming and satisfying winter meal.
- Seasonal Variations:
- Spring: Garnish with fresh dill or parsley instead of chives for a spring-like flavor. Serve with asparagus spears or a side of spring greens.
- Summer: Serve chilled Potato Leek Soup (Vichyssoise) as a refreshing summer appetizer or light meal. Garnish with a dollop of yogurt and fresh herbs.
- Autumn: Garnish with toasted pumpkin seeds or a sprinkle of nutmeg for a warm autumnal touch. Serve with roasted root vegetables or a side of apple salad.
- Winter: Serve hot with hearty garnishes like crispy bacon or cheese croutons for a comforting winter meal. Pair with roasted meats or stews.
- Special Occasions:
- Elegant appetizer: Serve in small cups or shot glasses as an elegant appetizer for cocktail parties or special occasions.
- Soup course at a formal dinner: Include Potato Leek Soup as a soup course in a multi-course formal dinner.
- Holiday meal: Add Potato Leek Soup to your holiday menu as a comforting and sophisticated starter.
No matter how you choose to serve it, Potato Leek Soup is a versatile and crowd-pleasing dish that is sure to be enjoyed. Experiment with different garnishes and pairings to find your favorite way to enjoy this classic soup.
Additional Tips for Perfect Potato Leek Soup
To ensure your Potato Leek Soup is absolutely perfect every time, here are five additional tips that will elevate your soup to the next level:
- Thoroughly Clean Your Leeks: Leeks are notorious for trapping dirt and grit between their layers. Proper cleaning is essential to avoid a gritty soup. The best method is to slice the leeks lengthwise down the middle, then rinse them under cold running water, separating the layers as you go. Ensure you remove all traces of soil. After rinsing, chop them as directed in the recipe. Don’t skip this step – it makes a huge difference in the final texture of your soup.
- Don’t Brown the Leeks and Garlic: The goal when sautéing leeks and garlic is to soften them and release their flavors, not to brown them. Browning can impart a bitter taste. Keep the heat at medium or medium-low and stir frequently. If they start to brown too quickly, reduce the heat immediately. Gentle sautéing results in a sweeter and more delicate flavor base for your soup.
- Use Quality Broth: The broth is a major component of the soup’s flavor. Using high-quality chicken or vegetable broth is crucial for a flavorful final product. Homemade broth is always best, but if using store-bought, choose a good brand, preferably low-sodium to control the salt level. A rich and flavorful broth will significantly enhance the overall taste of the soup.
- Taste and Season as You Go: Seasoning is key to bringing out the best flavors in any dish. Taste the soup at different stages – after sautéing the leeks and garlic, after adding the broth and potatoes, and again after puréeing and adding the cream. Adjust salt and pepper to taste at each stage. Remember that flavors develop and change as the soup cooks, so continuous tasting and adjusting is essential for a perfectly seasoned soup.
- Control the Consistency: Potato Leek Soup should be creamy and smooth, but not too thick or too thin. If your soup is too thick after puréeing, thin it out by adding a little more broth or water, a quarter cup at a time, until you reach your desired consistency. If it’s too thin, simmer it uncovered for a bit longer to allow some of the liquid to evaporate and thicken it naturally. The ideal consistency is velvety smooth and coats the back of a spoon nicely.
Frequently Asked Questions (FAQ)
Here are some frequently asked questions about Potato Leek Soup to help you troubleshoot and further enhance your soup-making experience:
Q1: Can I make Potato Leek Soup vegetarian or vegan?
A: Yes, absolutely! To make it vegetarian, simply use vegetable broth instead of chicken broth. To make it vegan, substitute olive oil for butter and use full-fat coconut milk or cashew cream instead of heavy cream. These substitutions will maintain the creamy texture and delicious flavor while adhering to vegetarian and vegan dietary preferences.
Q2: Can I freeze Potato Leek Soup?
A: Yes, Potato Leek Soup freezes well, making it a great make-ahead dish. However, it’s best to freeze it before adding the heavy cream. Allow the puréed soup to cool completely, then transfer it to freezer-safe containers or bags, leaving some headspace for expansion. Freeze for up to 2-3 months. When ready to serve, thaw overnight in the refrigerator, then reheat gently on the stovetop. Once heated through, stir in the heavy cream and simmer briefly before serving. Freezing cream-based soups can sometimes alter the texture slightly, but freezing before adding cream helps maintain the best quality.
Q3: How do I make Potato Leek Soup thinner or thicker?
A: To make the soup thinner, simply add more broth or water, a quarter cup at a time, until you reach your desired consistency. Stir well after each addition and simmer briefly to incorporate the liquid. To make the soup thicker, simmer it uncovered over low heat for a longer period. This allows excess liquid to evaporate, naturally thickening the soup. Stir occasionally to prevent sticking and monitor the consistency as it reduces.
Q4: Can I use different types of potatoes?
A: While Yukon Gold potatoes are highly recommended for their creamy texture and buttery flavor, you can use other waxy potato varieties like red potatoes or fingerling potatoes as alternatives. Russet potatoes, being starchier, are less ideal as they can make the soup gluey if over-blended. If using Russets, be careful not to over-purée and consider rinsing the chopped potatoes before cooking to remove some excess starch.
Q5: What are some variations I can try with Potato Leek Soup?
A: Potato Leek Soup is a versatile base for many variations! Here are a few ideas:
- Cheese: Add shredded Gruyère, cheddar, or Parmesan cheese while simmering for a cheesy version.
- Smoked Salmon: Swirl in smoked salmon flakes at the end for a luxurious and flavorful twist.
- Bacon: Add crispy bacon bits for a smoky and savory flavor boost.
- Curry: Add a teaspoon of curry powder while sautéing the leeks and garlic for a warm, spiced variation.
- Roasted Garlic: Use roasted garlic instead of smashed garlic for a sweeter, mellower garlic flavor.
- Herbs: Experiment with different herbs like dill, parsley, or rosemary in addition to or instead of thyme.
These FAQs should help you confidently tackle any questions or concerns you might have while making this delightful Potato Leek Soup. Enjoy the process and the delicious result!
PrintPotato Leek Soup Recipe
Ingredients
- 3 tablespoons unsalted butter: Butter is the foundation of flavor in this soup. Unsalted butter is preferred as it gives you complete control over the saltiness of the final dish. The butter provides richness and a velvety texture as it melts and coats the leeks and garlic in the initial stages of cooking. It also contributes to a subtle nutty flavor as it gently browns while sautéing the aromatics. Using a good quality butter will significantly enhance the overall taste of the soup. For those seeking a dairy-free or vegan option, high-quality olive oil can be substituted, though it will impart a slightly different flavor profile.
- 4 large leeks, white and light green parts only, roughly chopped (about 5 cups): Leeks are the star of this soup, lending their delicate, onion-like flavor that is sweeter and milder than regular onions. It’s crucial to use only the white and light green parts of the leek, as the darker green parts can be tougher and more fibrous. Properly cleaning leeks is paramount as they tend to trap soil and grit between their layers. To clean them effectively, slice them lengthwise, then rinse them thoroughly under cold running water, making sure to separate the layers to remove any hidden dirt. Roughly chopping them ensures they cook down evenly and release their flavor into the butter and broth. The quantity, about 5 cups, is essential for achieving the signature leek flavor that defines this soup.
- 3 cloves garlic, peeled and smashed: Garlic is the aromatic backbone of many savory dishes, and it plays a supporting but crucial role in Potato Leek Soup. Smashed garlic cloves are used rather than minced or chopped, as this allows for a gentler infusion of garlic flavor into the butter and leeks without overpowering the delicate taste of the leeks. Smashed garlic releases its aromatic oils more slowly, creating a subtle background note that complements the sweetness of the leeks and the earthiness of the potatoes. For those sensitive to garlic, you can reduce the amount to 2 cloves or even omit it entirely, although it does contribute a layer of depth to the soup.
- 2 pounds Yukon Gold potatoes, peeled and roughly chopped into ½-inch pieces: Yukon Gold potatoes are the ideal choice for this soup due to their creamy texture and slightly buttery flavor. Their lower starch content compared to Russet potatoes prevents the soup from becoming overly thick or gluey. Peeled potatoes ensure a smooth and refined texture in the final puréed soup. Chopping them into ½-inch pieces is important for even cooking and ensuring they become tender in the specified cooking time. The size also facilitates quick cooking and easy blending. While Yukon Golds are recommended, other waxy potatoes like red potatoes can also be used, though they may result in a slightly different texture.
- 7 cups chicken or vegetable broth: Broth is the liquid base of the soup and significantly impacts its overall flavor. Chicken broth adds a richer, more savory depth, while vegetable broth keeps the soup vegetarian and lighter. Using a good quality broth is key to achieving a flavorful soup. Homemade broth is always superior, but high-quality store-bought broth, preferably low-sodium, is a convenient alternative. Low-sodium broth allows you to control the salt level of the soup more precisely. The 7 cups of broth provide the perfect liquid-to-solid ratio, creating a soup that is neither too thick nor too thin.
- 2 bay leaves: Bay leaves are aromatic leaves that infuse a subtle, slightly peppery, and herbaceous flavor into the soup as it simmers. They are essential for adding depth and complexity without being overpowering. Dried bay leaves are commonly used and readily available. It’s crucial to remove the bay leaves before puréeing the soup, as they are not edible and can have a slightly bitter taste if left in. Two bay leaves are sufficient to impart their flavor without dominating the other ingredients.
- 3 sprigs fresh thyme: Fresh thyme adds a bright, earthy, and slightly lemony note to the soup, complementing the leeks and potatoes beautifully. Fresh thyme is preferred over dried thyme for its more vibrant and aromatic flavor. Using sprigs allows for easy removal before puréeing. The thyme infuses its flavor into the broth as the soup simmers, adding a layer of herbaceousness that enhances the overall complexity of the dish. If fresh thyme is unavailable, you can substitute with ½ teaspoon of dried thyme, but fresh is highly recommended for the best flavor.
- 1 teaspoon salt: Salt is a crucial seasoning that enhances all the flavors in the soup. The recipe calls for 1 teaspoon of salt, but it’s important to season to taste throughout the cooking process. The amount of salt needed may vary depending on the saltiness of the broth used. It’s best to start with the recommended amount and then adjust as needed after simmering and before adding the cream. Salt not only enhances flavor but also balances the sweetness of the leeks and the earthiness of the potatoes.
- ¼ teaspoon ground black pepper: Black pepper adds a subtle warmth and a hint of spice that complements the other flavors in the soup. Freshly ground black pepper is always preferable for its more pungent and aromatic qualities. The ¼ teaspoon is a starting point, and you can adjust to your preference. Pepper adds a subtle layer of complexity and prevents the soup from being overly one-dimensional.
- 1 cup heavy cream: Heavy cream is the ingredient that transforms this soup from a simple vegetable broth into a luxuriously creamy and decadent dish. It adds richness, smoothness, and a velvety texture that elevates the soup to another level. Adding the cream at the end, just before simmering, ensures it doesn’t curdle. While heavy cream is traditionally used, you can substitute with half-and-half for a slightly lighter version, or for a vegan option, full-fat coconut milk or cashew cream can be used, though they will impart a slightly different flavor.
- Chives, finely chopped, for serving: Fresh chives are the perfect garnish for Potato Leek Soup. They add a pop of fresh, mild onion flavor and a vibrant green color that contrasts beautifully with the creamy white soup. Finely chopped chives are sprinkled over the soup just before serving, adding a final touch of freshness and visual appeal. Other garnishes can also be used, such as croutons, a swirl of olive oil, or a sprinkle of crispy bacon, but chives are a classic and elegant choice.
Instructions
- Melt the butter over medium heat in a large soup pot. Add the leeks and garlic and cook, stirring regularly, until soft and wilted, about 10 minutes. Adjust the heat as necessary so as not to brown.
- Melt the butter over medium heat in a large soup pot: Start by selecting a large, heavy-bottomed soup pot or Dutch oven. This type of pot ensures even heat distribution, preventing hot spots and scorching. Melt the butter over medium heat. You want the butter to melt gently without browning at this stage. The melted butter creates the base for sautéing the aromatics and infusing the soup with richness.
- Add the leeks and garlic: Once the butter is melted and shimmering, add the chopped leeks and smashed garlic cloves to the pot. Ensure the leeks are evenly distributed in the pot to cook uniformly.
- Cook, stirring regularly, until soft and wilted, about 10 minutes: This is a crucial step for developing the flavor of the soup. Sautéing the leeks and garlic in butter over medium heat softens them, mellows their raw flavors, and releases their aromatic compounds. Stir regularly to prevent sticking and ensure even cooking. “Soft and wilted” means the leeks should become translucent and tender, losing their raw texture. Avoid browning the leeks and garlic; you want them to gently soften and become fragrant. If they start to brown too quickly, reduce the heat to medium-low. This process typically takes about 10 minutes, but it can vary depending on the heat and the size of your pot.
- Add the potatoes, broth, bay leaves, thyme, salt and pepper to pot and bring to a boil. Cover and turn the heat down to low. Simmer for 15 minutes, or until the potatoes are very soft.
- Add the potatoes, broth, bay leaves, thyme, salt and pepper to pot: Once the leeks and garlic are softened, add the chopped potatoes, chicken or vegetable broth, bay leaves, thyme sprigs, salt, and black pepper to the pot. Ensure all the ingredients are added in this order to layer the flavors.
- Bring to a boil: Increase the heat to medium-high and bring the mixture to a boil. Boiling ensures that the flavors start to meld together and the potatoes begin to cook.
- Cover and turn the heat down to low: Once the soup reaches a boil, reduce the heat to low, cover the pot with a lid, and let it simmer gently. Simmering allows the potatoes to cook through and become very tender while also allowing the flavors to deepen and develop. Covering the pot helps to trap the steam and cook the potatoes more efficiently.
- Simmer for 15 minutes, or until the potatoes are very soft: Simmer the soup for approximately 15 minutes, or until the potatoes are fork-tender and easily mashable. The cooking time may vary depending on the size of the potato pieces and the heat of your simmer. Check for doneness by piercing a potato piece with a fork; it should slide in easily with no resistance. “Very soft” potatoes are essential for achieving a smooth and creamy puréed soup.
- Fish out the thyme sprig and bay leaves, then purée the soup with a hand-held immersion blender until smooth. (Alternatively, use a standard blender to purée the soup in batches; see note.)
- Fish out the thyme sprig and bay leaves: Before puréeing the soup, it’s crucial to remove the thyme sprigs and bay leaves. These aromatic herbs have imparted their flavor, and they are not meant to be consumed. Use tongs or a slotted spoon to carefully remove them from the soup and discard them.
- Purée the soup with a hand-held immersion blender until smooth: The next step is to purée the soup until it is completely smooth and creamy. An immersion blender is the easiest and most convenient tool for this as it allows you to purée the soup directly in the pot, minimizing mess and cleanup. Insert the immersion blender into the soup pot and blend in an up-and-down motion until the soup is velvety smooth with no lumps. Be careful to keep the blender head submerged to avoid splattering hot soup.
- (Alternatively, use a standard blender to purée the soup in batches; see note.): If you don’t have an immersion blender, you can use a standard countertop blender. However, it’s essential to purée the soup in batches to avoid overfilling the blender and causing hot soup to splatter. Carefully ladle hot soup into the blender jar, filling it no more than halfway. Secure the lid tightly and place a kitchen towel over the lid to prevent hot soup from escaping. Start blending on low speed and gradually increase to high until smooth. Pour the puréed soup into a clean pot or bowl and repeat with the remaining soup. Note: Always be extremely cautious when blending hot liquids in a standard blender to prevent burns.
- Add the heavy cream and bring to a simmer. Taste and adjust seasoning with salt and pepper. If soup is too thin, simmer until thickened. If it’s too thick, add water or stock to thin it out. Garnish with fresh herbs if desired.
- Add the heavy cream: Once the soup is puréed to a smooth consistency, stir in the heavy cream. The cream adds richness, luxuriousness, and a beautiful velvety texture to the soup.
- Bring to a simmer: Return the pot to medium-low heat and gently bring the soup back to a simmer. Simmering for a few minutes after adding the cream helps to meld the flavors and slightly thicken the soup. Avoid boiling the soup after adding cream, as it can cause the cream to curdle or separate.
- Taste and adjust seasoning with salt and pepper: This is a crucial step to ensure the soup is perfectly seasoned to your taste. Taste the soup and add more salt and pepper as needed. Remember that flavors can change as the soup cools, so it’s best to season it to taste while it’s warm.
- If soup is too thin, simmer until thickened: If the soup is thinner than desired, continue to simmer it uncovered over low heat. Simmering allows excess liquid to evaporate, concentrating the flavors and thickening the soup naturally. Stir occasionally to prevent sticking.
- If it’s too thick, add water or stock to thin it out: If the soup is too thick, you can thin it out by adding a little water or chicken/vegetable broth. Add liquid gradually, stirring after each addition, until you reach your desired consistency.
- Garnish with fresh herbs if desired: Finally, ladle the hot soup into bowls and garnish with finely chopped fresh chives. Garnishes add a touch of freshness, flavor, and visual appeal. Other garnish options include a swirl of cream, croutons, a drizzle of olive oil, or a sprinkle of crispy bacon.
Nutrition
- Serving Size: One Normal Portion
- Calories: 350-450
- Sugar: 5-8 grams
- Sodium: 500-700 mg
- Fat: 25-35 grams
- Saturated Fat: 15-20 grams
- Unsaturated Fat: 5-10 grams
- Carbohydrates: 25-35 grams
- Fiber: 3-5 grams
- Protein: 6-8 grams
- Cholesterol: 80-100 mg