Why it works: Vinegar and mustard 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 ↓
Mayonaise Salad Dressing
Ingredients
Directions
Make the emulsion
Place the two raw yolks in a pint bowl and add 2 tablespoons of olive oil.
Set the bowl in ice water to chill and beat with an egg beater for about 30 seconds.
Gradually add more olive oil while whipping until the mixture thickens like softened butter.
Finish the dressing
Alternately add vinegar and olive oil until all is incorporated.
Stir in the mustard and cayenne for seasoning.
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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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
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Egg + mustardtop 28% of all pairsSmell alikemoderateCooked together9,210 recipes
Shared aroma: (e)-2-octenal (fatty, green).
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Egg + olivetop 31% of all pairsSmell alikemoderateCooked together15,340 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
- Emulsify the oil and water-based vinegar, giving the dressing its thick, creamy body.
- Olive oil
- Forms the fat phase that, dispersed in droplets, thickens the dressing into a rich texture.
- Vinegar or lemon juice
- Adds acidity that brightens the flavour and helps keep the dressing tangy.
- Made mustard
- Acts as an extra emulsifier that helps stabilise the dressing and adds sharpness.
The step that matters
Adding the oil gradually while whipping. Oil must be added slowly so the droplets are fully absorbed by the egg yolk. Adding it too fast can break the emulsion, leaving the dressing thin and separated.
Swap the mustard
How well each one fits the dish's main ingredients (egg, olive, vinegar):
- Cucumberfits better
- Capsicumfits better
- Mustardthe original
- Tomatofits about as well
Fit is the average pairing score against egg, 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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