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 ↓
Lettuce Salad
Ingredients
Directions
Make the dressing
Remove the yolks from the hard-boiled eggs and mash them finely.
Add coarse sea salt and mustard to taste.
Make a paste by mixing in the olive oil or melted butter.
Gradually dilute the mixture with the vinegar.
Assemble and serve
Pour the dressing over the lettuce.
Slice the additional hard-boiled egg and lay it over the lettuce as a garnish.
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).
-
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).
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Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hard-boiled eggs
- Mashed yolks form the body of the dressing, thickening it into a creamy base.
- Olive oil or melted butter
- Fat that combines with the mashed yolk into a smooth paste and adds richness.
- Vinegar
- Adds acidity that sharpens the dressing and balances the richness of the fat.
- Lettuce
- Main salad base that the dressing coats.
The step that matters
Gradually dilute the mixture with the vinegar. Adding vinegar slowly lets the mashed yolk and oil emulsify into a smooth dressing; adding it all at once can cause the mixture to separate and turn thin and watery.
Swap the lettuce
How well each one fits the dish's main ingredients (egg, mustard, olive, vinegar):
- Horseradishfits about as well
- Cucumberfits about as well
- Lettucethe original
- Shallotfits about as well
Fit is the average pairing score against egg, mustard, olive, 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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