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
Ingredients
Directions
Make the dressing
In a bowl, beat the egg yolks, sugar, flour, mustard, and salt until light.
Add the vinegar and butter, then cook over simmering water until smooth and thick.
Serve
When ready to use, thin the dressing with sweet cream to your desired consistency.
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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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).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 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 and add richness as they cook and set.
- Sugar
- Adds sweetness to balance the sharpness of the vinegar.
- Flour
- Stabilizes the dressing and helps it stay thick and smooth.
- Vinegar
- Adds acidity that gives the dressing its tang.
- Butter
- Adds fat for smoothness and a rounder mouthfeel.
The step that matters
Cook over simmering water until smooth and thick. Egg yolks thicken and can scramble if they get too hot. Gentle, indirect heat from simmering water lets them set into a smooth custard-like dressing.
Swap the mustard
How well each one fits the dish's main ingredients (egg, sugar, flour, vinegar, butter, cream):
- Shallotfits about as well
- Chivefits about as well
- Mustardthe original
- Leekfits about as well
Fit is the average pairing score against egg, sugar, flour, vinegar, butter, 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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