Why it works: Mustard and lettuce 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 ↓
Salad for Lettuce
Ingredients
Directions
Make the dressing
Mash the yolk of the hard boiled egg finely.
Mix in salt, mustard, and cayenne pepper.
Add vinegar and olive oil (or melted butter) and mix well.
Stir in sugar, spring onions, and the chopped egg white.
Dress and serve
Pour the mixture over fresh, crisp lettuce and stir gently to avoid bruising.
Serve immediately.
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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Mustard + lettucetop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Olive + lettucetop 5% of all pairsSmell alikestrongCooked together2,580 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 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 + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Emulsifies the oil and vinegar, giving the dressing a smooth, creamy body.
- Mustard
- Adds sharp flavour and helps hold the oil and vinegar together in the dressing.
- Olive oil or melted butter
- Provides fat that carries flavour and gives the dressing a rich mouthfeel.
- Vinegar
- Adds acidity that brightens the dressing and balances the fat.
- Lettuce
- Forms the crisp base that the dressing clings to.
The step that matters
Stir gently when dressing the lettuce. Lettuce leaves bruise and wilt easily under pressure or heavy mixing. Folding gently keeps them crisp, and serving right away preserves that texture before the dressing softens the leaves.
Swap the onion
How well each one fits the dish's main ingredients (egg, mustard, pepper, vinegar, olive, sugar, lettuce):
- Capsicumfits better
- Cucumberfits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against egg, mustard, pepper, vinegar, olive, sugar, lettuce. 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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