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 ↓
Good Salad Dressing
Ingredients
Directions
Prepare
Mix the sugar, salt, cayenne pepper, mustard, and warm water until smooth.
Add the cream or melted butter.
Cook
Bring to a boil.
Remove from heat.
Whisk in the beaten egg yolks.
Cook in boiling water until thickened.
Finish and serve
Gradually add the vinegar.
Serve cold.
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.
-
Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
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).
-
Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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 and help bind it into a smooth, stable emulsion when heated gently.
- Mustard
- Helps emulsify the fat and water, and adds sharp flavor.
- Vinegar
- Adds acidity that brightens the flavor and balances the richness.
- Cream or melted butter
- Adds fat, giving the dressing richness and a smooth, creamy texture.
- Sugar
- Adds sweetness that balances the acidity of the vinegar.
The step that matters
Cook in boiling water until thickened. Egg yolk proteins thicken as they heat, but if they get too hot they set into lumps and curdle. Cooking gently while whisking keeps the dressing smooth.
Swap the mustard
How well each one fits the dish's main ingredients (egg, vinegar, sugar, cream, pepper):
- Capsicumfits about as well
- Mustardthe original
- Horseradishfits about as well
- Spinachfits less well
Fit is the average pairing score against egg, vinegar, sugar, cream, 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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