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
In a bowl, mix the mustard, salt, and cayenne until well blended.
Add the egg yolk and beat well with a wooden spoon.
Add a few drops of olive oil and stir steadily.
Continue adding oil gradually until half of it is used.
Then, alternate adding lemon juice and the remaining oil.
If the dressing is too thick, add a small amount of cream or the beaten egg white just 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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Olive + lemontop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Its lecithin emulsifies the oil and water so the dressing stays smooth and thick.
- Olive oil
- Forms the bulk of the dressing and provides its rich, fatty body.
- Mustard
- Its natural emulsifiers help stabilise the emulsion and add a sharp flavour.
- Lemon juice
- Adds acidity that brightens the flavour and helps balance the richness of the oil.
The step that matters
Adding the oil gradually. Oil must be added slowly at first so the yolk can disperse it into tiny droplets. Adding too much at once can break the emulsion, leaving the dressing oily and separated.
Swap the mustard
How well each one fits the dish's main ingredients (egg, olive, pepper, lemon):
- Capsicumfits better
- Spinachfits better
- Asparagusfits better
- Mustardthe original
Fit is the average pairing score against egg, olive, pepper, lemon. 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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