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
Beat the yolk of the egg well with an egg beater.
Add a dash each of cayenne, paprika, and mustard, along with 4 teaspoons of coarse sea salt and a pinch of sugar.
Mix in the juice of 1 lemon thoroughly.
Gradually add the oil while continuing to beat the mixture until it reaches the desired consistency.
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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Pepper + mustardtop 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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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Emulsifies the oil and water in the lemon juice, giving the dressing its thick, creamy structure.
- Oil
- Forms the bulk of the emulsion, providing richness and body as it is beaten in.
- Lemon juice
- Adds acidity that brightens the flavour and helps keep the emulsion stable.
The step that matters
Gradually add the oil while beating. Oil must be added slowly while beating so it disperses into tiny droplets held by the egg yolk. Adding it too fast can break the emulsion, leaving the dressing oily and runny.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, sugar, lemon):
- Capsicumfits better
- Asparagusfits better
- Spinachfits better
- Mustardthe original
Fit is the average pairing score against egg, pepper, sugar, 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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