Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Mayonnaise Dressing
Ingredients
Directions
Chill the yolk and oil.
Drop the oil into the yolk one drop at a time while stirring continuously.
Once the mixture thickens, add the vinegar and lemon juice mixed together a little at a time, stirring constantly.
Add the remaining ingredients.
If the mayonnaise is too thick, thin it with whipped cream or beaten egg whites.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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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).
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Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Yolk of eggs
- Emulsifies the oil into the mixture, giving the dressing its body and richness.
- Oil
- Forms the bulk of the emulsion, giving the dressing its rich, smooth texture.
- Vinegar
- Adds acidity that sharpens flavor and helps stabilize the emulsion.
- Lemon juice
- Adds acidity and bright flavor to balance the richness of the oil.
The step that matters
Adding the oil one drop at a time. Egg yolk lecithin can only hold oil droplets in suspension if the oil is added slowly at first. Adding it too fast breaks the emulsion, so the mixture separates and won't thicken.
Swap the mustard
How well each one fits the dish's main ingredients (pepper, vinegar, lemon, egg):
- Capsicumfits better
- Spinachfits about as well
- Shallotfits about as well
- Mustardthe original
Fit is the average pairing score against pepper, vinegar, lemon, egg. 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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