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 ↓
Boiled Salad Dressing
Ingredients
Directions
Make the dressing base
Beat the yolks of three eggs in a bowl.
Add mustard, salt, cayenne pepper, sugar, melted butter or oil, cream or milk, and hot vinegar. Mix well.
Cook the mixture in a double boiler until it thickens.
Finish the dressing
In a separate bowl, beat the egg whites until stiff peaks form.
Fold the beaten egg whites into the thickened mixture.
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).
-
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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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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 over gentle heat, giving it a rich, creamy body.
- Egg whites
- Whipped to stiff peaks, they lighten the dressing and add airy volume.
- Vinegar
- Adds acidity that sharpens the flavour and balances the richness of the yolks and fat.
- Cream or milk
- Adds moisture and softness, mellowing the dressing into a smoother texture.
- Butter or oil
- Adds fat that makes the dressing feel smooth and rounded on the palate.
The step that matters
Cooking the yolk mixture in the double boiler. Egg yolks thicken as their proteins set, but if the heat is too high they scramble and curdle. Gentle, indirect heat keeps the mixture smooth while it thickens.
Swap the mustard
How well each one fits the dish's main ingredients (egg, pepper, sugar, butter, cream, vinegar):
- Capsicumfits about as well
- Mustardthe original
- Asparagusfits about as well
- Potatofits about as well
Fit is the average pairing score against egg, pepper, sugar, butter, cream, vinegar. 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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