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
Prepare
In a bowl, mix sugar, mustard, and salt.
Add butter and milk, then place in a double boiler to heat.
Thicken
Once hot, pour the mixture onto the beaten egg yolks while stirring continuously.
Return to the stove and cook until thick like cream, stirring to prevent curdling.
Finish
Just before serving, add lemon juice to taste.
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 + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the dressing as their proteins set when gently heated, giving it a creamy body.
- Butter
- Adds fat for richness and a smooth, silky mouthfeel.
- Milk
- Provides the liquid base and helps the dressing thin to a pourable, creamy texture.
- Sugar
- Adds sweetness to balance the sharpness of the mustard and lemon.
- Mustard
- Adds sharp, tangy flavour that cuts through the richness of the butter and yolks.
The step that matters
Cook the yolk mixture gently until thick. Egg yolk proteins set when heated, so high heat or overheating causes curdling and a grainy texture. Cooking slowly over a double boiler while stirring keeps the heat even and the custard smooth.
Swap the mustard
How well each one fits the dish's main ingredients (sugar, egg, butter, milk, lemon):
- Asparagusfits better
- Sweet potatofits better
- Potatofits better
- Mustardthe original
Fit is the average pairing score against sugar, egg, butter, milk, lemon. 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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