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, combine egg yolks, salt, and mustard.
Stir with a fork and slowly add olive oil until the mixture thickens.
Add lemon juice and vinegar, stirring constantly until well mixed.
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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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lemon + olivetop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Pepper + mustardtop 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 into the mixture and give the dressing its body and richness.
- Olive oil
- Forms the fat base that gives the dressing its thick, creamy texture when emulsified.
- Mustard
- Helps hold the emulsion together and adds sharpness to the dressing.
- Lemon juice
- Adds acidity that brightens the flavour and balances the richness of the oil.
- Vinegar
- Adds acidity that sharpens the flavour and balances the richness of the oil.
The step that matters
Adding the olive oil slowly. Oil must be added gradually while stirring so the yolk can emulsify it into tiny droplets. Adding it too fast can break the mixture so it stays oily and fails to thicken.
Swap the mustard
How well each one fits the dish's main ingredients (egg, lemon, pepper, vinegar, olive):
- Capsicumfits better
- Spinachfits about as well
- Cucumberfits about as well
- Mustardthe original
Fit is the average pairing score against egg, lemon, pepper, vinegar, olive. 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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