Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Slaw Dressing
Ingredients
Directions
Make the dressing
Beat the egg yolks with sugar, melted butter, and salt.
Stir in the cream or milk and dissolve the cornstarch in a little of the milk before adding.
Add the dry mustard, vinegar, and cayenne pepper.
In a separate bowl, beat the egg whites until stiff and fold them into the mixture.
Cook the mixture in a double boiler until thickened.
Store
Store in a cool place; it will keep for days.
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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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken and enrich the dressing, adding richness and emulsifying the fat.
- Egg whites
- Beaten until stiff and folded in, they add lightness and airy texture.
- Vinegar
- Provides the sharp acidity that defines the dressing's tangy flavour.
- Cornstarch
- Thickens the liquid as it cooks, giving the dressing body.
- Sugar
- Balances the sharpness of the vinegar with sweetness.
The step that matters
Cooking in a double boiler until thickened. Egg yolks scramble if they get too hot, so gentle indirect heat lets them thicken smoothly. Stirring keeps the heat even and prevents lumps and curdling.
Swap the mustard
How well each one fits the dish's main ingredients (egg, sugar, butter, cream, vinegar, pepper):
- Capsicumfits about as well
- Mustardthe original
- Asparagusfits about as well
- Potatofits about as well
Fit is the average pairing score against egg, sugar, butter, cream, vinegar, pepper. 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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