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
Place the egg yolk in a cold bowl.
Add the salt, mustard, cayenne, and sugar; mix until smooth.
Slowly add the oil, one drop at a time, stirring constantly.
As the mixture thickens, thin it with vinegar and lemon juice.
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).
-
Olive + lemontop 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).
-
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 yolk
- Emulsifies the oil and water-based liquids, holding the dressing together as a smooth sauce.
- Salad oil
- Forms the bulk of the emulsion, giving the dressing its rich body and mouthfeel.
- Lemon juice
- Adds acidity that brightens flavor and helps thin the thickened emulsion.
- Vinegar
- Adds acidity for sharpness and helps thin the thickened emulsion.
- Sugar
- Adds a small amount of sweetness that balances the acidity.
The step that matters
Adding the oil. Oil must be added very slowly while stirring constantly, because the egg yolk can only emulsify a limited amount at a time. Adding oil too fast breaks the emulsion, so the dressing separates instead of thickening.
Swap the mustard
How well each one fits the dish's main ingredients (olive, lemon, vinegar, egg, pepper, sugar):
- Capsicumfits better
- Mustardthe original
- Cucumberfits about as well
- Spinachfits about as well
Fit is the average pairing score against olive, lemon, vinegar, egg, pepper, sugar. 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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