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 ↓
Cream Salad Dressing
Ingredients
Directions
Make the dressing
Mix mustard, salt, flour, sugar, and cayenne in a bowl.
Add butter, egg yolk, and hot vinegar to the mixture.
Cook over boiling water, stirring constantly until thick.
Cool and finish
Cool the mixture.
Fold in the whipped cream.
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).
-
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
- Flour
- Thickens the dressing as its starch swells and sets when heated.
- Egg yolk
- Thickens and enriches the dressing as its proteins gently set with heat.
- Vinegar
- Adds sharp acidity that balances the richness of the dressing.
- Heavy cream
- Whipped and folded in, it adds lightness, body, and a smooth texture.
- Sugar
- Adds sweetness that softens the sharpness of the vinegar and mustard.
- Butter
- Adds fat that gives the cooked base a rich, smooth mouthfeel.
The step that matters
Cooking over boiling water while stirring constantly. The egg yolk proteins set and thicken the dressing as it heats, but if the heat is too high or stirring stops, they can scramble and curdle. Constant stirring keeps the heat even so the mixture thickens smoothly.
Swap the mustard
How well each one fits the dish's main ingredients (flour, sugar, pepper, butter, egg, vinegar, cream):
- Capsicumfits about as well
- Mustardthe original
- Shallotfits about as well
- Chivefits about as well
Fit is the average pairing score against flour, sugar, pepper, butter, egg, 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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