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 ↓
An Elegant Salad Dressing
Ingredients
Directions
Make the base
In a bowl, combine flour, butter, sugar, salt, mustard, and red pepper, then rub the mixture together.
Add cold water and egg yolks.
Stir in vinegar and boil, stirring constantly until thick and smooth.
Set aside to cool.
Finish the dressing
Whip the cream until solid.
Fold the whipped cream into the cooled mixture.
Add olive oil and mix well.
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).
-
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 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 set during cooking.
- Vinegar
- Adds acidity that gives the dressing its sharp, tangy flavour.
- Flour
- Thickens the base so it becomes smooth and holds together when cooked.
- Whipped cream
- Lightens the cooled dressing and adds a creamy, airy texture.
- Olive oil
- Adds fat and a smooth mouthfeel to the finished dressing.
The step that matters
Boil the vinegar mixture until thick and smooth. Egg yolks and flour thicken as they heat, but overheating can scramble the yolks. Stirring constantly spreads heat evenly and prevents lumps and curdling.
Swap the mustard
How well each one fits the dish's main ingredients (flour, butter, sugar, pepper, 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, butter, sugar, pepper, 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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