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 ↓
Salad Dressing of Butter
Ingredients
Directions
Beat the eggs, mustard, salt, cayenne pepper, and butter together until well combined.
Add the vinegar and stir the mixture in a dish over boiling water until it thickens to the consistency of cream.
If the dressing is too thick, thin it with cream.
Allow to cool before using on 1 large chicken.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Thicken the dressing as they cook over water and bind it into a smooth emulsion.
- Butter
- Adds richness and body, helping the dressing turn smooth and creamy.
- Vinegar
- Adds sharp acidity that balances the richness of the eggs and butter.
- Mixed mustard
- Adds sharpness and flavour and helps stabilise the emulsion.
The step that matters
Stir over boiling water until it thickens. Egg proteins set gently with heat, so the mixture thickens to a cream-like consistency. Too much heat can scramble the eggs and curdle the dressing, so keep the water at a simmer or below and stir constantly.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, butter, vinegar, cream):
- Capsicumfits about as well
- Potatofits about as well
- Mustardthe original
- Spinachfits about as well
Fit is the average pairing score against egg, pepper, butter, vinegar, cream. 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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