Why it works: Pepper and lemon 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 all ingredients.
Put the whole egg in a bowl and beat thoroughly.
Mix mustard, pepper, salt, and sugar into the eggs.
Make the dressing
Add oil and lemon juice alternately until the desired thickness is reached.
Use about 1 cup of oil and the juice of ½ lemon for one egg.
Rest
For best flavor, make the dressing a day in advance and refrigerate.
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.
-
Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
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).
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
- Whole egg
- Emulsifies the oil and lemon juice, giving the dressing its body and thickness.
- Oil
- Provides the fat that, dispersed through the egg, makes the dressing rich and thick.
- Lemon juice
- Adds acidity that brightens flavor and helps keep the emulsion stable.
- Mustard
- Its natural emulsifiers help hold the oil and egg together in a stable emulsion.
The step that matters
Add oil and lemon juice alternately. Adding oil slowly while beating lets tiny droplets disperse into the egg, forming a stable emulsion. Adding it too fast can break the mixture so it separates and fails to thicken.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, sugar, lemon):
- Capsicumfits better
- Asparagusfits better
- Spinachfits better
- Mustardthe original
Fit is the average pairing score against egg, pepper, 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 dressing 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.
Chicken Salad623 recipes
Salad Dressing491 recipes
Tomato Salad179 recipes
Cold Slaw160 recipes