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 ↓
Mayonnaise Dressing
Ingredients
Directions
Make the emulsion
Beat the egg yolks, mustard, sugar, cayenne pepper, and salt until light.
Slowly add a few drops of oil at a time until the mixture thickens.
Add the oil more rapidly.
Add the vinegar.
Mix until very thick.
Chill and serve
Chill in the refrigerator for a few hours.
Fold in the cream just before serving.
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).
-
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).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Sugar + vinegartop 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
- Their lecithin emulsifies the oil and water into a stable, thick sauce.
- Oil
- Forms the body of the sauce as tiny droplets suspended in the yolk mixture.
- Vinegar
- Adds acidity that sharpens flavor and helps keep the emulsion stable.
- Mustard
- Its natural emulsifiers help hold the oil and yolk mixture together.
- Cream
- Folded in at the end to lighten the texture and add richness.
The step that matters
Adding the oil. Oil must go in slowly at first, a few drops at a time, so the yolks can absorb it into tiny droplets. Adding it too fast can break the emulsion, leaving a thin, separated sauce that will not thicken.
Swap the mustard
How well each one fits the dish's main ingredients (egg, sugar, pepper, vinegar, cream):
- Capsicumfits about as well
- Mustardthe original
- Horseradishfits about as well
- Spinachfits less well
Fit is the average pairing score against egg, sugar, pepper, vinegar, cream. 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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