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 Salad Dressing
Ingredients
Directions
Beat the yolks of two raw eggs until well combined.
Season with cayenne pepper, coarse sea salt, and mustard to taste.
Slowly add olive oil in a fine stream while stirring constantly until smooth and thick.
Gradually add vinegar while continuing to stir until well mixed.
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 + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Pepper + olivetop 11% of all pairsSmell alikemoderateCooked together30,263 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsifies the oil and water so the dressing becomes smooth and thick rather than separating.
- Olive oil
- Forms the fat base of the emulsion, giving the dressing its body and rich mouthfeel.
- Vinegar
- Adds acidity that brightens the flavour and balances the richness of the oil.
- Mustard
- Contributes emulsifying help and sharp flavour that stabilises the dressing.
The step that matters
Slowly add olive oil in a fine stream while stirring constantly. Oil must be dispersed into the yolks in tiny droplets. Adding it too fast overwhelms the yolk's emulsifiers, and the dressing can split into a greasy, separated liquid.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, olive, vinegar):
- Capsicumfits better
- Cucumberfits about as well
- Tomatofits about as well
- Mustardthe original
Fit is the average pairing score against egg, pepper, olive, 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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