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 ↓
Tomato Salad with Nuts
Ingredients
Directions
Prepare
Place the tomatoes on lettuce leaves on bread and butter plates.
Scoop out the stem end of each tomato to form a small cup.
Make the dressing
For the dressing, mix salt, mustard, sugar, egg yolks, and sweet cream.
Add vinegar and cook over boiling water, stirring constantly until done.
Assemble and serve
Just before serving, fill the cup with roasted peanuts.
Assemble the salad just before serving to maintain flavor.
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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Tomato + lettucetop 6% of all pairsSmell alikemoderateCooked together1,655 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Lettuce + peanuttop 7% of all pairsSmell alikestrongCooked together170 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Tomato + breadtop 10% of all pairsSmell alikemoderateCooked together1,013 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the dressing and give it a rich, smooth body when cooked.
- Sweet cream
- Adds richness and moisture, softening the sharpness of the vinegar.
- Vinegar
- Provides acidity that gives the dressing its tangy flavor.
- Sugar
- Balances the acidity of the vinegar with sweetness.
- Roasted peanuts
- Add crunch and a toasty, nutty flavor against the soft tomato.
The step that matters
Cook the dressing over boiling water, stirring constantly. Egg yolks thicken as they heat but can scramble if they get too hot or are left unstirred. Gentle, constant stirring over simmering water heats them evenly so the dressing turns smooth and thick rather than lumpy.
Swap the tomato
How well each one fits the dish's main ingredients (lettuce, bread, butter, peanut, mustard, sugar, egg):
- Chivefits better
- Shallotfits better
- Asparagusfits better
- Tomatothe original
Fit is the average pairing score against lettuce, bread, butter, peanut, mustard, sugar, egg. 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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