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 Sauce
Ingredients
Directions
Beat the egg until light.
Add olive oil and lemon juice alternately, a few drops at a time, while beating steadily.
Continue until the mixture reaches the consistency of thick cream.
Stir in a pinch of cayenne pepper.
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.
Photo for illustrative purposes only · Contact us to use it
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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Olive + lemontop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Olive + peppertop 11% of all pairsSmell alikemoderateCooked together30,263 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Egg + olivetop 31% of all pairsSmell alikemoderateCooked together15,340 recipes
Shared aroma: 2,4-decadienal (seaweed).
Egg and lemon barely smell alike, yet cooks put them together in 44,316 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 lecithin acts as an emulsifier, holding the oil and lemon juice together as a stable sauce.
- Olive oil
- Supplies the fat that, dispersed in droplets, thickens the sauce into a rich, creamy texture.
- Lemon juice
- Adds acidity that brightens flavour and helps the emulsion set into a stable, thick consistency.
The step that matters
Adding the oil and lemon juice slowly. Oil must be dispersed into tiny droplets while beating so the egg can emulsify it. Adding too much at once breaks the emulsion, leaving the sauce thin and oily.
“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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