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 ↓
Cooked-cream Dressing
Ingredients
Directions
Prepare the base
In a bowl, mix the flour, salt, mustard, and sugar, mashing any lumps smooth with the back of a spoon.
Slightly beat the egg yolks and mix them into the dry ingredients.
Add the melted butter while beating the mixture continuously.
Cook the dressing
Stir in the cold milk and cook over a pan of hot water very slowly until the mixture coats the back of a spoon.
Remove from heat and slowly add the hot vinegar.
If the mixture curdles, add 2 tablespoons of cold water, set the pan in cold water, and beat until smooth.
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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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter 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
- Flour
- Starch that thickens the dressing and gives it body.
- Egg yolks
- Proteins that thicken with gentle heat and help bind the dressing.
- Melted butter
- Fat that adds richness and a smooth, silky mouthfeel.
- Milk
- Liquid that loosens the thickened base into a pourable sauce.
- Hot vinegar
- Acid that adds tang and sharpens the flavour of the dressing.
The step that matters
Cook the milk mixture very slowly over hot water. Egg yolks thicken through gentle heat, and too much heat scrambles them into curds. Stop as soon as the mixture coats the back of a spoon, since it thickens further as it cools.
Swap the mustard
How well each one fits the dish's main ingredients (flour, egg, butter, milk, sugar, vinegar):
- Shallotfits about as well
- Capsicumfits about as well
- Chivefits about as well
- Mustardthe original
Fit is the average pairing score against flour, egg, butter, milk, sugar, vinegar. 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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