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 ↓
Boiled Dressing for Fruit Salad
Ingredients
Directions
Beat the yolks of 10 eggs very light with 2-3 cups of sugar.
Place the mixture in a double boiler.
Add 1½ cups of warm vinegar, ¼ teaspoon mustard, paprika, and coarse sea salt to taste.
Stir continuously until the mixture becomes very thick, ensuring the water in the double boiler is not too hot.
Once thickened, remove from heat.
Stir in 1 tablespoon of olive oil.
Let cool and thin with cream as desired.
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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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Vinegar + olivetop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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 gently over heat, giving it body and a creamy texture.
- Sugar
- Sweetens the dressing and balances the sharpness of the vinegar.
- Vinegar
- Adds acidity that brightens the dressing and cuts through the richness of the yolks.
- Olive oil
- Adds fat that gives the finished dressing a smoother, richer mouthfeel.
- Cream
- Thins the thickened custard base to a pourable consistency.
The step that matters
Thickening over the double boiler. Egg yolks thicken through gentle heat; if the water is too hot they can overheat and scramble, leaving lumps. Constant stirring and gentle heat keep the custard smooth.
Swap the mustard
How well each one fits the dish's main ingredients (egg, sugar, vinegar, olive, cream):
- Capsicumfits about as well
- Mustardthe original
- Cucumberfits about as well
- Asparagusfits less well
Fit is the average pairing score against egg, sugar, vinegar, olive, 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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