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 Without Oil
Ingredients
Directions
Cook the base
Combine butter, dry mustard, vinegar, and eggs in a double boiler.
Beat the eggs lightly and add salt and pepper to taste.
Stir the mixture until it begins to thicken, but do not let it boil.
Cool and serve
Remove from heat, cool, and chill 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).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Proteins thicken gently when heated, giving the sauce its body and structure.
- Butter
- Adds fat for richness and a smoother, rounder mouthfeel.
- Vinegar
- Adds acidity for sharp, bright flavor that balances the richness.
- Dry mustard
- Adds pungent flavor and helps stabilize the emulsion.
The step that matters
Stir until just thickening, without boiling. Egg proteins thicken gently at moderate heat, but high heat makes them curdle and scramble. Stirring constantly over a double boiler keeps the heat even and the sauce smooth.
Swap the mustard
How well each one fits the dish's main ingredients (butter, vinegar, egg, pepper):
- Capsicumfits better
- Mustardthe original
- Shallotfits about as well
- Cucumberfits about as well
Fit is the average pairing score against butter, vinegar, egg, 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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