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
Make the base
In a bowl, mix the salt, mustard, powdered sugar, and cayenne pepper.
Add the yolks of the fresh eggs and beat with a wooden spoon until slightly thickened.
Add ½ teaspoon of vinegar and blend well with the other ingredients.
Add the oil
Slowly add the olive oil drop by drop while beating constantly. Once several teaspoons of oil have been added, you can add the oil faster.
If the mixture becomes too thick, add a little lemon juice, then more oil, alternating until combined.
Finally, add the remaining vinegar.
Chill in the refrigerator until ready to use.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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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
- Emulsify the oil into the mixture and thicken it into a smooth dressing.
- Olive oil
- Provides the fat that forms the body and richness of the dressing.
- Mustard
- Helps hold the oil and water phases together as a stabilizing emulsifier.
- Lemon juice
- Adds acidity and thins the dressing when it becomes too thick.
- Vinegar
- Adds acidity for sharp flavor and helps balance the richness of the oil.
The step that matters
Adding the oil slowly while beating constantly. Oil must be dispersed into the egg yolk in tiny droplets so the emulsion forms. Adding it too fast overwhelms the yolk, and the mixture can split or fail to thicken.
Swap the mustard
How well each one fits the dish's main ingredients (sugar, pepper, egg, olive, lemon, vinegar):
- Capsicumfits better
- Mustardthe original
- Cucumberfits about as well
- Spinachfits about as well
Fit is the average pairing score against sugar, pepper, egg, olive, lemon, vinegar. 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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