Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Mayonnaise Dressing
Ingredients
Directions
Place the egg yolk in a bowl.
Add salt and sugar.
Slowly drizzle in oil while stirring briskly until thickened.
Once thick, add oil more quickly until desired quantity is reached.
Slowly pour in lemon juice while beating until well mixed and to taste.
Add onion juice 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.
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Lemon + oniontop 19% of all pairsSmell alikemoderateCooked together15,646 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + oniontop 34% of all pairsSmell alikelowCooked together23,333 recipes
Shared aroma: 2,4-decadienal (seaweed).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Its lecithin emulsifies the oil and water, holding the oil droplets suspended to form a thick sauce.
- Oil
- Forms the bulk of the sauce, giving it richness and body as it is emulsified into the yolk.
- Lemon juice
- Adds acidity that balances the richness of the oil and brightens the flavour.
The step that matters
Drizzling in the oil. Oil must be added slowly at first while stirring briskly, so that small droplets are dispersed and the yolk can emulsify them. Adding oil too fast breaks the emulsion and the sauce fails to thicken.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (egg, sugar, lemon):
- Asparagusfits better
- Arrowrootfits better
- Sweet potatofits better
- Onionthe original
Fit is the average pairing score against egg, sugar, lemon. 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.
More mayonnaise recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Lemon Sauce236 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes