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Creamy Potato-Leek Soup Recipe

The French classic done so right even Julia would be proud.This recipe was featured as part of our Sexy Vampire Halloween Party photo gallery.

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Why it works: Leek and potato share more aroma than cooks usually use. They rank in the top 4% of all ingredient pairs, and 30 recipes mention both. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓

The recipe

8 cups
Prep30 min
Cook30 min

Ingredients

Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)

Directions

Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.

  1. Melt the butter in a large heavy pot over medium heat. Add the chopped leeks and cook, stirring often, until soft and pale, about 8 minutes.

  2. Add the diced potatoes, kosher salt, thyme leaves, vegetable broth and water. Stir well and bring to a boil over high heat.

  3. Reduce the heat to medium-low, partly cover, and simmer gently until the potatoes are completely tender when pierced with a knife, about 15 minutes.

  4. Remove the pot from the heat. Mash some of the potatoes against the side of the pot with a potato masher or the back of a spoon to thicken the soup, leaving some pieces whole.

  5. Stir in the heavy cream and warm the soup gently over low heat for 2 to 3 minutes. Do not let it boil. Taste and adjust salt before serving hot.

By chow. Recipe from Open Recipes.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.

  1. Leek + potatotop 4% of all pairs
    Aroma overlapstrong
    Mentioned together30 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  2. Leek + thymetop 3% of all pairs
    Aroma overlapstrong
    Mentioned together360 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  3. Potato + thymetop 3% of all pairs
    Aroma overlapmoderate
    Mentioned together1,586 recipes

    Shared aroma: methyl 2-methylbutyrate (apple, fatty).

  4. Butter + creamtop 3% of all pairs
    Aroma overlapstrong
    Mentioned together41,494 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  5. Butter + potatotop 6% of all pairs
    Aroma overlapstrong
    Mentioned together6,445 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

Flavor stand-ins for the thyme

How well each one fits the dish's main ingredients (butter, leek, potato, cream):

  1. Garlicabout as good a flavor fit
  2. Celeryabout as good a flavor fit
  3. Thymethe original
  4. Nutmegabout as good a flavor fit

Fit is the average pairing score against butter, leek, potato, cream. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).