Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Stewed Leeks
Ingredients
Directions
Prepare the leeks
Trim and wash the leeks.
Boil the leeks in salted, boiling water for 30 minutes.
Drain the leeks and arrange them in a heated dish with the bulbs facing one way.
Make the sauce
In a saucepan, melt the butter.
Add the flour to the melted butter and mix well.
Slowly add the milk while stirring constantly until it boils.
Stir in the salt and pepper, then pour the sauce over the leeks and serve hot.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Leek + flourtop 8% of all pairsSmell alikestrongCooked together328 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Leek + peppertop 12% of all pairsSmell alikemoderateCooked together965 recipes
Shared aroma: coumarin (sweet, hay).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Leeks
- Form the main body of the dish, becoming tender through boiling.
- Butter
- Provides fat and richness, and carries the flavour of the sauce.
- Flour
- Thickens the melted butter and milk into a smooth sauce.
- Milk
- Forms the liquid base of the sauce, which thickens as it heats.
The step that matters
Adding the milk to the roux. Adding milk slowly while stirring constantly keeps the flour and butter mixture smooth. Adding it all at once can trap lumps of flour that do not dissolve evenly.
Swap the leek
How well each one fits the dish's main ingredients (butter, flour, milk, pepper):
- Potatofits better
- Capsicumfits better
- Chivefits about as well
- Leekthe original
Fit is the average pairing score against butter, flour, milk, pepper. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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