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 Cream
Ingredients
Directions
Prepare
In a bowl, mix mustard, sugar, and salt.
In a separate bowl, beat the eggs and add vinegar.
Combine
Melt the butter and combine it with the egg mixture.
Gradually stir in the milk until well combined.
Add the mustard mixture and mix thoroughly.
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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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Egg yolks emulsify the fat and liquid, giving the dressing a thick, smooth body.
- Butter
- Adds fat for richness and a silky mouthfeel.
- Vinegar
- Provides acidity that gives the dressing its sharp, tangy flavour.
- Mustard
- Adds sharp flavour and helps hold the emulsion together.
- Sugar
- Balances the acidity and mustard with gentle sweetness.
- Milk
- Adds moisture and lightens the texture of the dressing.
The step that matters
Gradually stir in the milk until well combined.. Adding liquid slowly lets the egg and fat emulsion absorb it evenly. Pouring it in all at once can break the emulsion, leaving the dressing thin or separated.
Swap the mustard
How well each one fits the dish's main ingredients (sugar, egg, vinegar, butter, milk):
- Capsicumfits about as well
- Potatofits about as well
- Mustardthe original
- Asparagusfits about as well
Fit is the average pairing score against sugar, egg, vinegar, butter, milk. 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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