Leek soup is a timeless and comforting dish that boasts a delicate yet distinctive flavor profile. Characterized by the sweet and slightly onion-like taste of leeks, this soup often features additional ingredients like potatoes, garlic, and broth. The leeks are typically sautéed to enhance their natural sweetness, contributing to a depth of flavor. Whether enjoyed creamy or with a clear broth, leek soup offers a versatile and nutritious option, making it a favorite in various culinary traditions. Whether served as a light starter or a heartwarming main course, leek soup is a classic choice for those seeking a delicious and satisfying bowl of warmth.

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The Best Slow Cooker For Soup

Burnt Leek Soup Recipe


  • 4 large leeks, white and light green parts only, sliced
  • 2 tablespoons olive oil
  • 4 cups vegetable or chicken broth
  • 2 medium potatoes, peeled and diced or a can of white beans
  • 2 cloves garlic, minced
  • Salt and pepper to taste
  • 1/2 cup heavy cream (optional, for added richness) or flour and butter (as seen in video)
  • Fresh chives, chopped (for garnish)
  • Thyme
  • Optional- White Wine
* Please note that this recipe uses heavy cream instead of butter and flour. You can use flour and butter as seen in the burnt leek video, or you can use heavy cream. When you use heavy cream you do not need to thinken the recipe with flour and butter. If you are vegan use flour and plant based butter to make the burnt leek soup vegan.

What are Leeks?

Leeks are a vegetable belonging to the Allium family, closely related to onions, garlic, and shallots. Known for their mild and sweet flavor, leeks feature long, cylindrical stalks with white bases and dark green leaves. While the entire vegetable is edible, the most commonly used parts are the white and light green sections. Leeks are versatile in the kitchen, adding a subtle onion taste to various dishes. They are often used in soups, stews, and casseroles, where their unique flavor contributes depth without overpowering other ingredients. Leeks are also a good source of vitamins, minerals, and antioxidants, making them not only a flavorful addition to meals but also a nutritious one.

The History of Burnt Leek Soup

Also known as “Potage Parmentier” in French cuisine, can be traced back to the 18th century. The dish is credited to Antoine-Augustin Parmentier, a French pharmacist and nutritionist. During a time when potatoes were met with skepticism and considered fit only for animal consumption, Parmentier sought to popularize this nutritious tuber. Legend has it that he created burnt leek soup by burning leeks to enhance their flavor, blending them with potatoes and other ingredients to make a nourishing and palatable soup. Parmentier’s efforts significantly contributed to the acceptance of potatoes in French cuisine, and today, burnt leek soup remains a classic, embodying a delicious fusion of history, innovation, and culinary tradition.


  1. Prepare Leeks:

    • Cut the leeks lengthwise, then slice them into half-moons. Rinse them thoroughly under running water to remove any dirt.
  2. Sauté Leeks:

    • Heat olive oil in a large pot over medium heat. Add the sliced leeks and cook until they start to brown and caramelize, stirring occasionally. This will take about 10-15 minutes.
  3. Add Garlic:

    • Add minced garlic to the pot and sauté for another 1-2 minutes until fragrant.
  4. Add Potatoes or Beans and Broth:

    • Stir in the diced potatoes or beans and pour in the vegetable or chicken broth. Bring the mixture to a simmer.
  5. Simmer:

    • Reduce the heat to low, cover the pot, and let it simmer until the potatoes are tender. This will take approximately 15-20 minutes.
  6. Blend (if you do not want chunks) This the traditional way:

    • Use an immersion blender to blend the soup until smooth. If you don’t have an immersion blender, you can transfer the soup in batches to a regular blender.
  7. Season:

    • Season the soup with salt and pepper to taste. Adjust the seasoning as needed.
    • Add thyme
  8. Add Cream (Optional):

    • If desired, stir in the heavy cream to add richness to the soup.
  9. Serve:

    • Ladle the soup into bowls and garnish with fresh chopped chives.

Enjoy your delicious Burnt Leek Soup!

Feel free to customize the recipe according to your taste preferences.

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