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 Dressing
Ingredients
Directions
Make the sauce
Melt the butter.
Whisk in the flour, salt, mustard, pepper, and milk.
Beat the egg yolks and mix them with the vinegar.
Place the sauce over boiling water and stir in the egg and vinegar mixture until it thickens.
Cool and store
Cool quickly.
Store the dressing in a scalded glass jar and pour a few drops of vinegar on top.
Cover tightly and keep in a cool place.
If the dressing is too thick, thin it with cream or milk.
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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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 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
- Flour
- Thickens the milk mixture so the dressing has body.
- Egg yolks
- Thicken the sauce as they cook and add richness.
- Butter
- Adds fat and smooth flavour to the base sauce.
- Vinegar
- Adds acidity that gives the dressing its sharp tang.
- Milk
- Forms the liquid base that the flour and yolks thicken.
The step that matters
Stir in the egg and vinegar mixture until it thickens. Egg yolks set when heated, but if they get too hot they can curdle or scramble. Heating gently over boiling water, with constant stirring, lets the sauce thicken smoothly.
Swap the mustard
How well each one fits the dish's main ingredients (butter, pepper, flour, milk, egg, vinegar):
- Capsicumfits better
- Shallotfits about as well
- Potatofits about as well
- Mustardthe original
Fit is the average pairing score against butter, pepper, flour, milk, egg, 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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