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 ↓
Dressed Tomatoes
Ingredients
Directions
Prepare
Peel and slice the tomatoes.
Make the dressing
In a saucepan, combine egg yolks, butter, salt, sugar, and vinegar.
Boil the mixture until it thickens, stirring constantly.
Let the dressing cool.
Add the mixed mustard.
Serve
Serve the dressing with the sliced tomatoes or pour it over whole peeled tomatoes after removing the core.
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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Tomato + mustardtop 11% of all pairsSmell alikemoderateCooked together2,482 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Tomato + vinegartop 16% of all pairsSmell alikemoderateCooked together5,063 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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 during cooking, giving it a creamy body.
- Butter
- Adds richness and smoothness, making the dressing silky and mellow.
- Vinegar
- Provides acidity that sharpens the dressing and balances the sweetness.
- Sugar
- Softens the sharpness of the vinegar and rounds out the flavor.
- Tomatoes
- Serve as the fresh, juicy base that the tangy dressing is spooned over.
The step that matters
Boil the mixture until it thickens, stirring constantly. Egg yolks can scramble if they overheat. Constant stirring spreads the heat evenly, so the mixture thickens smoothly instead of curdling.
Swap the tomato
How well each one fits the dish's main ingredients (egg, butter, sugar, coffee, vinegar, mustard):
- Horseradishfits better
- Cucumberfits better
- Shallotfits better
- Tomatothe original
Fit is the average pairing score against egg, butter, sugar, coffee, vinegar, mustard. 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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