Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Cress-salad
Ingredients
Directions
Prepare
Cut the cress into small pieces and place in a salad bowl.
Sprinkle with sugar.
Make the dressing
In a separate bowl, mix salt, pepper, and mustard with oil.
Gradually add vinegar while whisking with an egg beater until well combined.
Dress and serve
Pour the dressing over the cress and toss with a fork.
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 + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Mustard + sugartop 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
- Cress
- Forms the leafy base of the salad and provides its fresh, peppery flavor.
- Oil
- Carries fat-soluble flavors and gives the dressing a smooth, rich body.
- Vinegar
- Adds acidity that brightens the dressing and balances the oil.
- Prepared mustard
- Helps emulsify the oil and vinegar so the dressing stays combined.
- Sugar
- Softens the sharpness of the vinegar and mustard for a balanced sweetness.
The step that matters
Adding the vinegar gradually while whisking. Adding vinegar slowly while whisking breaks the oil into tiny droplets, creating a stable emulsion. Pouring it in all at once can make the dressing separate.
Swap the mustard
How well each one fits the dish's main ingredients (pepper, vinegar, sugar):
- Capsicumfits better
- Mustardthe original
- Cabbagefits less well
- Cucumberfits less well
Fit is the average pairing score against pepper, vinegar, sugar. 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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