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 and Cress Salad
Ingredients
Directions
Prepare the salad
Wash and cut up the lettuce and cress.
Pile them in a salad bowl.
Make and dress
In a separate bowl, mix vinegar, salt, sugar, and mustard. Gradually add salad oil while mixing well.
Pour the dressing over the salad and toss with a fork.
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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Lettuce + mustardtop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lettuce + vinegartop 14% of all pairsSmell alikemoderateCooked together2,370 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + mustardtop 19% of all pairsSmell alikemoderateCooked together8,424 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lettuce
- Forms the crisp, leafy bulk of the salad.
- Cress
- Adds a peppery, fresh flavour and crisp texture to the greens.
- Vinegar
- Provides acidity that sharpens the dressing and balances the oil.
- Salad oil
- Adds fat that carries flavour and gives the dressing body.
- Mustard
- Emulsifies the oil and vinegar and adds a sharp, pungent note.
The step that matters
Gradually add the salad oil while mixing. Adding oil slowly while whisking breaks it into small droplets held in the vinegar, so the dressing stays emulsified and cohesive rather than separating into greasy layers.
Swap the lettuce
How well each one fits the dish's main ingredients (vinegar, sugar, mustard):
- Horseradishfits better
- Radishfits about as well
- Shallotfits about as well
- Lettucethe original
Fit is the average pairing score against vinegar, sugar, mustard. 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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