Why it works: Lettuce and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Lettuce Salad
Ingredients
Directions
Make the dressing
Rub the yolks of the hard-boiled eggs to a powder.
Add sugar, pepper, salt, mustard, and oil.
Let it stand for five minutes.
Beat in the vinegar.
Prepare the salad
Cut the lettuce into pieces using a knife and fork.
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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Lettuce + mustardtop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lettuce + peppertop 9% of all pairsSmell alikemoderateCooked together4,037 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Mashed yolks thicken the dressing and add richness and body.
- Salad oil
- Adds fat that carries flavor and gives the dressing a smooth, coating texture.
- Vinegar
- Provides acidity that sharpens the dressing and balances the oil and sugar.
- White sugar
- Adds sweetness that softens the sharpness of the vinegar and mustard.
- Made mustard
- Adds sharp flavor and helps emulsify the oil into the dressing.
The step that matters
Beat in the vinegar. Adding vinegar after the oil and yolks helps form a smooth emulsion; adding it too fast or too early can cause the dressing to separate and taste uneven.
Swap the lettuce
How well each one fits the dish's main ingredients (egg, sugar, mustard, pepper, vinegar):
- Horseradishfits better
- Capsicumfits better
- Shallotfits about as well
- Lettucethe original
Fit is the average pairing score against egg, sugar, mustard, pepper, 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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