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Creamy potato leek soup recipe served in a rustic bowl with fresh herbs.

Creamy Potato Leek Soup

Discover the secret to a rich and complex Creamy Potato Leek Soup with this chef-refined recipe. Humble potatoes and leeks are transformed into a silky, restaurant-quality masterpiece, elevated by a simple deglazing technique with dry sherry or white wine. This surprisingly easy French-inspired comfort food promises unrivaled depth and smooth perfection, ideal for any occasion.
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Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 6
Course: Main Course, Soup
Cuisine: French
Calories: 350
Ingredients Equipment Method Notes

Ingredients
  

  • 3 tablespoons unsalted butter
  • 4 large leeks white and light green parts only, roughly chopped (about 5 cups)
  • 3 cloves garlic peeled and smashed
  • ¼ cup dry sherry or dry white wine (e.g., Sauvignon Blanc or Pinot Grigio)
  • 2 pounds Yukon Gold potatoes peeled and roughly chopped into ½-inch pieces
  • 7 cups chicken or vegetable broth
  • 2 bay leaves
  • 3 sprigs fresh thyme
  • 1 teaspoon salt
  • ¼ teaspoon ground black pepper
  • 1 cup heavy cream
  • Chives finely chopped, for serving

Equipment

  • Large soup pot
  • Dutch oven
  • hand-held immersion blender

Method
 

1. Sauté the Aromatics
  1. Melt the unsalted butter over medium heat in a large soup pot or Dutch oven. Add the chopped leeks and smashed garlic. Cook, stirring regularly, until the leeks are soft and wilted, about 10 minutes. Adjust the heat as necessary so as not to brown the leeks.
2. Deglaze for Depth
  1. Add the dry sherry or white wine to the pot. Immediately begin scraping up any browned bits (the "fond") from the bottom of the pot with a wooden spoon. Simmer for 2-3 minutes until most of the alcohol has cooked off.
3. Simmer and Soften
  1. Add the Yukon Gold potatoes, chicken or vegetable broth, bay leaves, fresh thyme sprigs, salt, and ground black pepper to the pot. Bring the mixture to a boil, then cover and turn the heat down to low. Simmer for 15 minutes, or until the potatoes are very soft.
4. Purée to Perfection
  1. Carefully fish out the thyme sprigs and bay leaves. Using a hand-held immersion blender, purée the soup directly in the pot until it is completely smooth. (If using a standard blender, work in batches, leaving the hole in the lid open and covering loosely with a dishtowel to allow heat to escape).
5. Finish with Cream and Season
  1. Add the heavy cream to the puréed soup and bring it to a gentle simmer. Avoid a vigorous boil. Taste and adjust the seasoning with additional salt and pepper as needed. If too thin, simmer uncovered; if too thick, add a little water or broth. Garnish with fresh, finely chopped chives if desired.

Notes

For the best results, meticulously clean your leeks to avoid grittiness, and cook them slowly until translucent, not browned, to develop a sweet flavor base. Always taste and adjust seasoning throughout the cooking process. If the soup is too thick, thin with broth or water; if too thin, gently simmer uncovered to reduce. Quality broth makes a noticeable difference. Leftovers store well in the refrigerator for 3-4 days. This soup is freezer-friendly for up to 3 months if frozen *without* the heavy cream.
Nutrition information is estimated based on common ingredients and serving sizes and may vary.