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 ↓
Boiled Dressing
Ingredients
Directions
In a bowl, mix together the butter, flour, and salt.
Add sugar, milk, and mustard, then boil for five minutes while stirring carefully.
Stir in paprika and vinegar, then bring the mixture to a boiling point.
Remove from heat to reduce temperature.
Add the beaten eggs and return to low heat, cooking until thick.
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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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).
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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
- Butter
- Adds fat and richness, and helps form the base with the flour.
- Flour
- Thickens the dressing and gives it body once cooked.
- Milk
- Forms the liquid base that thickens into a creamy sauce.
- Eggs
- Set when heated, adding thickness and structure to the dressing.
- Vinegar
- Adds acidity that gives the dressing its tangy flavor.
The step that matters
Adding the beaten eggs. Eggs can curdle or scramble if they meet high heat directly. Removing the pan from heat first and returning it to low heat lets the eggs thicken the sauce gently and evenly.
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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