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 for Salads
Ingredients
Directions
Make the dressing
Powder the yolks of two hard-boiled eggs and mix with salt.
Add the oil drop by drop while stirring continuously.
Stir in mustard, pepper, and sugar.
Whip the raw egg to a froth and beat it into the dressing.
Pour in the vinegar gradually, using a total of ½ cup.
Dress the salad
Pour the dressing over the salad and mix well with two forks.
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).
-
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).
-
Mustard + sugartop 19% of all pairsSmell alikemoderateCooked together8,424 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hard-boiled egg yolks
- Powdered yolks blend smoothly and help emulsify the oil into the dressing.
- Oil
- Forms the bulk of the emulsion, giving the dressing its richness and body.
- Raw egg
- Its proteins add structure and help hold the emulsion together.
- Vinegar
- Adds acidity that brightens flavour and helps stabilise the emulsion.
- Prepared mustard
- Its natural emulsifiers help keep the oil and water-based parts from separating.
The step that matters
Adding the oil drop by drop. Oil must be dispersed into tiny droplets while stirring constantly. Adding it too fast overwhelms the egg proteins, so the emulsion breaks and the mayonnaise separates into a greasy liquid.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, sugar, vinegar):
- Capsicumfits better
- Mustardthe original
- Cucumberfits less well
- Cabbagefits less well
Fit is the average pairing score against egg, pepper, sugar, vinegar. 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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