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 Salad Dressing
Ingredients
Directions
Make the dressing
In a bowl, mix the mustard, sugar, salt, and cayenne pepper.
Add the well-beaten egg yolks and mix well.
Slowly add the olive oil a few drops at a time until the mixture is stiff and stringy.
Then, add 1 teaspoon of raw egg and the remaining oil alternately with the vinegar and lemon juice, finishing with the lemon juice.
Adjust the texture
For a thinner dressing, you may add the white of 1 egg.
To achieve a whiter dressing, dilute with whipped cream.
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 + vinegartop 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).
-
Mustard + olivetop 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 yolks
- Emulsifier that binds the oil and vinegar into a stable, thick dressing.
- Olive oil
- Provides the fat that, emulsified with the yolks, gives the dressing its body.
- Mustard
- Helps hold the oil and vinegar emulsion together and adds sharpness.
- Vinegar
- Adds acidity that balances the richness of the oil and yolks.
The step that matters
Adding the oil slowly at first. Oil must be added a few drops at a time so the emulsion forms. Adding it too fast breaks the mixture, which stays runny and separated instead of becoming stiff.
Swap the mustard
How well each one fits the dish's main ingredients (sugar, pepper, egg, olive, vinegar, lemon):
- Capsicumfits better
- Mustardthe original
- Cucumberfits about as well
- Spinachfits about as well
Fit is the average pairing score against sugar, pepper, egg, olive, vinegar, 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.
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