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 ↓
Salad Dressing
Ingredients
Directions
Make the sauce
In a saucepan, melt the butter until hot.
Add flour and stir until smooth, being careful not to brown.
Pour in the milk and bring to a boil.
Finish and store
In a bowl, beat the eggs, salt, pepper, sugar, and mustard together.
Stir in the vinegar and cook until thick like soft custard.
Keep the dressing in a cool place before serving.
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.
Photo for illustrative purposes only · Contact us to use it
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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Butter + flourtop 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).
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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
- Eggs
- Thicken the dressing as they cook, giving it a custard-like body.
- Flour
- Thickens the butter and milk base so the dressing holds together.
- Butter
- Adds fat and richness to the base.
- Vinegar
- Adds sharp acidity that balances the sweetness and richness.
- Milk
- Forms the liquid base that the flour thickens.
The step that matters
Stir in the vinegar and cook until thick like soft custard. Egg proteins set as they heat, so cooking gently while stirring keeps the dressing smooth. Overheating can curdle the eggs and make the dressing grainy.
Swap the mustard
How well each one fits the dish's main ingredients (butter, flour, sugar, milk, vinegar, egg):
- Shallotfits about as well
- Capsicumfits about as well
- Chivefits about as well
- Mustardthe original
Fit is the average pairing score against butter, flour, sugar, milk, vinegar, egg. 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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