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
Boil the eggs hard, then remove the yolk from one and place it in a bowl.
Mash the yolk until smooth, then mix in the mustard, condensed milk, pepper, salt, and slowly add the oil.
Finally, stir in the vinegar until well combined.
Prepare and serve
Remove the outer leaves from the lettuce, tear it into pieces, wash in cold water, and dry thoroughly.
Place the lettuce in a salad bowl, pour the dressing over it, and garnish with slices of the remaining egg.
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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Vinegar + peppertop 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
- Lettuce
- Forms the crisp base of the salad that holds the dressing.
- Hard-boiled eggs
- Yolk is mashed into the dressing to give it body; white slices add garnish.
- Mustard
- Emulsifies the oil and vinegar and adds a sharp, savoury bite.
- Oil
- Provides fat and richness, slowly combined to form a smooth dressing.
- Vinegar
- Adds acidity that brightens the dressing and balances the oil.
- Condensed milk
- Adds sweetness and creaminess to balance the sharp vinegar and mustard.
The step that matters
Adding the oil slowly. Pouring the oil gradually into the mashed yolk and mustard lets the fat disperse into tiny droplets, so the dressing stays smooth and emulsified instead of separating.
Swap the lettuce
How well each one fits the dish's main ingredients (condensed milk, mustard, egg, vinegar, pepper):
- Capsicumfits better
- Shallotfits about as well
- Horseradishfits about as well
- Lettucethe original
Fit is the average pairing score against condensed milk, mustard, egg, vinegar, pepper. 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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