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Classic Potato Leek Soup

This refined recipe captures the essence of French comfort with a focus on fresh leeks and buttery Yukon Gold potatoes. It is a timeless dish that yields a velvety texture and a clean, delicate flavor suitable for any occasion.
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Prep Time 15 minutes
Cook Time 35 minutes
Servings: 4
Course: Soup
Cuisine: French
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

  • 3 large leeks white and light green parts only, sliced into half moons
  • 3 tablespoons unsalted butter
  • 2 garlic cloves finely minced
  • 1.5 pounds Yukon Gold potatoes peeled and cubed
  • 4 cups chicken or vegetable broth
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 teaspoon fresh thyme leaves
  • 1/2 cup heavy cream
  • 1/4 cup sour cream

Equipment

  • Large bowl for washing leeks
  • Heavy bottomed pot or Dutch oven
  • Sharp chef knife
  • Immersion blender or standard blender
  • Cutting board

Method
 

  1. Step 1: Prepare and Clean the Leeks
    Trim the roots and dark green tops from the leeks. Slice the white and light green sections in half and then into thin crescents. Submerge these in a large bowl of cold water, swirling to release any grit. Lift the leeks out of the water and drain them well.
  2. Step 2: Sauté the Aromatics
    Melt the butter in your pot over medium heat. Add the cleaned leeks and cook slowly for about ten minutes until they are soft and translucent. Add the minced garlic and cook for one more minute. Do not allow the vegetables to brown.
  3. Step 3: Simmer the Vegetables
    Stir in the cubed potatoes, thyme, salt, and pepper. Pour in the broth and bring the mixture to a gentle boil. Reduce the heat to a simmer, cover the pot, and cook for 25 minutes until the potatoes are completely tender.
  4. Step 4: Blend to Desired Smoothness
    Use an immersion blender to process the soup until it reaches your preferred consistency. For a rustic feel, leave a few small potato pieces. For a professional finish, blend until completely smooth.
  5. Step 5: Incorporate the Dairy
    Lower the heat and stir in the heavy cream and sour cream. Stir until the soup is rich and uniform in color. Taste and add more seasoning if needed.

Notes

To ensure a silky texture, avoid over blending the potatoes which can release too much starch and make the soup gummy.
Use a high quality broth as it provides the flavor foundation for the entire dish.
For the best experience, serve warm with a sprinkle of fresh chives or a side of crusty bread.