Why it works: Vinegar and mustard 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
Ingredients
Directions
Heat the vinegar in a granite basin on the stove.
Once hot, add the sugar and stir until dissolved.
Beat the egg yolks and mix in a little flour for thickening.
Pour the egg mixture into the hot vinegar, stirring constantly until it thickens.
Dissolve the mustard in a little hot water and add it to the mixture, stirring well.
Remove from heat and gradually add the butter, stirring until fully incorporated.
Add the salt, pepper, and curry powder, mixing well.
If using, stir in the cream until combined.
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.
Photo for illustrative purposes only · Contact us to use it
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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Vinegar + mustardtop 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).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the dressing as they set when heated, giving it a creamy body.
- Vinegar
- Provides the sharp acidity that defines the dressing's flavour.
- Butter
- Adds richness and a smooth, silky texture when stirred into the warm base.
- Flour
- Helps thicken the egg mixture and stabilise it against curdling.
- Mustard
- Adds sharp, pungent flavour that balances the richness of the yolks and butter.
- Sugar
- Balances the acidity of the vinegar with a touch of sweetness.
The step that matters
Pour the egg mixture into the hot vinegar, stirring constantly. Egg yolks scramble if they meet heat too quickly or unevenly. Constant stirring spreads the heat so the mixture thickens smoothly rather than curdling.
Swap the mustard
How well each one fits the dish's main ingredients (vinegar, sugar, egg, flour, butter, pepper, cream):
- Capsicumfits about as well
- Mustardthe original
- Shallotfits about as well
- Chivefits about as well
Fit is the average pairing score against vinegar, sugar, egg, flour, butter, pepper, 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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