Why it works: Lemon and pepper 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 egg yolks, mustard, salt, and pepper.
If using lemon juice, add it now.
Gradually add the vinegar while stirring constantly.
Slowly incorporate the olive oil, a few drops at a time, until fully absorbed.
Beat the mixture well with a wooden spoon.
For added flavor, mix in chopped capers, pickles, or pitted olives if desired.
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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Lemon + peppertop 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).
-
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).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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 vinegar, giving the dressing its thick, creamy structure.
- Mustard
- Helps stabilise the emulsion so the oil and vinegar stay combined.
- Olive oil
- Provides the fat that gives the dressing its richness and body.
- Vinegar
- Adds acidity that brightens flavour and balances the richness of the oil.
The step that matters
Adding the olive oil slowly. Oil added too quickly cannot be absorbed by the egg yolk emulsion and can separate, leaving a broken, oily dressing. Adding it a few drops at a time, while beating, lets each drop disperse fully before the next goes in.
Swap the lemon
The recipe marks lemon as optional. How well each one fits the dish's main ingredients (egg, mustard, vinegar, olive, pepper):
- Lemonthe original
- Limefits about as well
- Avocadofits about as well
- Cherryfits less well
Fit is the average pairing score against egg, mustard, vinegar, olive, pepper. 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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