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
In a saucepan, melt the butter and whisk in the flour until smooth.
Gradually add the cream and cook until thickened, stirring constantly.
Let the mixture cool, then stir in the beaten eggs, vinegar, sugar, mustard, salt, pepper, and red pepper.
Cook in a double boiler for about 10 minutes, stirring occasionally.
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).
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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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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour 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
- Butter
- Enriches the dressing with fat, giving it a rich, smooth mouthfeel.
- Flour
- Thickens the base with starch so the dressing becomes smooth and body-rich when cooked.
- Cream
- Adds fat and moisture, making the dressing creamy and mellow.
- Eggs
- Thicken the dressing as they cook gently, adding structure and richness.
- Vinegar
- Provides acidity that gives the dressing its tangy flavour.
- Sugar
- Balances the sharpness of the vinegar with gentle sweetness.
The step that matters
Cook in a double boiler. Eggs can scramble if overheated. Gentle, indirect heat from a double boiler lets the egg proteins thicken the dressing smoothly without curdling.
Swap the mustard
How well each one fits the dish's main ingredients (butter, flour, cream, egg, vinegar, sugar, pepper):
- Capsicumfits about as well
- Mustardthe original
- Shallotfits about as well
- Chivefits about as well
Fit is the average pairing score against butter, flour, cream, egg, vinegar, sugar, pepper. 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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