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 cupsIngredients
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.
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.
Add the diced potatoes, kosher salt, thyme leaves, vegetable broth and water. Stir well and bring to a boil over high heat.
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.
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.
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.
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.
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Leek + potatotop 4% of all pairsAroma overlapstrongMentioned together30 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Leek + thymetop 3% of all pairsAroma overlapstrongMentioned together360 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Potato + thymetop 3% of all pairsAroma overlapmoderateMentioned together1,586 recipes
Shared aroma: methyl 2-methylbutyrate (apple, fatty).
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Butter + creamtop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + potatotop 6% of all pairsAroma overlapstrongMentioned 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):
- Garlicabout as good a flavor fit
- Celeryabout as good a flavor fit
- Thymethe original
- 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).
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