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
Prepare
Chill the plate, eggs, oil, and fork before starting.
Make the emulsion
In a bowl, combine the egg yolks and salt, then beat with an egg beater.
Slowly add the oil drop by drop while continuing to beat.
Continue mixing until the dressing is thick and smooth.
Season
Add the vinegar and lemon juice, then season with salt, red pepper, and mustard.
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).
-
Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Lemon + mustardtop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Vinegar + peppertop 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
- Egg yolks
- Lecithin in the yolk emulsifies the oil and water, holding the dressing together and making it thick.
- Oil
- Provides the fat that, dispersed in droplets, gives the dressing its rich, thick body.
- Lemon juice
- Adds acidity that brightens the flavour and balances the richness of the oil.
- Vinegar
- Adds acidity that sharpens the flavour and helps keep the emulsion balanced.
- Mustard
- Acts as a secondary emulsifier that helps the oil and yolk stay blended.
The step that matters
Adding the oil slowly, drop by drop. Oil must be dispersed into tiny droplets while beating. Adding it too fast overwhelms the yolk's emulsifier, and the mixture splits and fails to thicken.
Swap the mustard
How well each one fits the dish's main ingredients (egg, vinegar, lemon, pepper):
- Capsicumfits better
- Spinachfits about as well
- Shallotfits about as well
- Mustardthe original
Fit is the average pairing score against egg, vinegar, lemon, 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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