Why it works: Watercress and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 307 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
French Salad
Ingredients
Directions
Prepare the greens
Thoroughly cleanse the watercress and lettuce, then shake them dry in a clean towel.
Arrange the greens in a salad bowl.
Dress and serve
In a separate bowl, mix the vinegar, oil, salt, and pepper.
Pour the dressing over the salad and 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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Watercress + lettucetop 1% of all pairsSmell alikestrongCooked together307 recipes
Shared aroma: coumarin (sweet, hay).
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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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Watercress + peppertop 10% of all pairsSmell alikemoderateCooked together983 recipes
Shared aroma: coumarin (sweet, hay).
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Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Lettuce + vinegartop 14% of all pairsSmell alikemoderateCooked together2,370 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Watercress
- Provides the leafy base and a peppery, slightly bitter flavor.
- Lettuce
- Adds crisp leaves that give the salad its bulk and crunch.
- Vinegar
- Adds acidity that brightens the dressing and balances the oil.
- Oil
- Carries flavor and coats the leaves, giving a smooth, silky mouthfeel.
The step that matters
Dry the greens before dressing. Water on the leaves dilutes the dressing and stops it clinging, so the salad turns watery and bland. Thorough drying lets the oil and vinegar coat each leaf evenly.
Swap the lettuce
How well each one fits the dish's main ingredients (watercress, vinegar, pepper):
- Horseradishfits better
- Mustardfits better
- Shallotfits about as well
- Lettucethe original
Fit is the average pairing score against watercress, 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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