Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cheese Salad
Ingredients
Directions
Make the dressing
Rub the hard-boiled egg yolk smooth with the olive oil.
Mix in the mustard, sugar, salt, and cayenne one at a time, mixing thoroughly after each addition.
Finish and serve
Add the grated cheese and the vinegar that has been infused with the onion for 30 minutes.
Serve the mixture on lettuce leaves.
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 + oniontop 6% of all pairsSmell alikestrongCooked together9,259 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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Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Olive + oniontop 8% of all pairsSmell alikemoderateCooked together29,779 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hard-boiled egg yolk
- Its fats and emulsifiers help bind the oil and seasonings into a smooth dressing.
- Olive oil
- Adds fat and richness, carrying flavour and giving the mixture a smooth, silky texture.
- Grated cheese
- Provides the main body, savoury flavour and bulk of the salad.
- Mustard
- Adds sharp flavour and helps stabilise the emulsion of oil and yolk.
- Vinegar
- Adds acidity that brightens the flavour and cuts through the richness of the cheese and oil.
The step that matters
Mixing in the seasonings one at a time. Egg yolk and oil form an emulsion that can break if ingredients are added too quickly. Adding each seasoning slowly and mixing thoroughly keeps the dressing smooth and evenly seasoned.
Swap the onion
How well each one fits the dish's main ingredients (egg, pepper, olive, cheese, mustard, vinegar, sugar):
- Capsicumfits better
- Lettucefits better
- Cucumberfits better
- Onionthe original
Fit is the average pairing score against egg, pepper, olive, cheese, mustard, 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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