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 ↓
Mayonnaise Dressing
Ingredients
Directions
In a bowl, combine sour cream, sugar, mustard, and vinegar.
Beat the eggs until very light and stir them into the cream mixture.
Cook the mixture on the stove until it thickens to the consistency of cold honey.
While still on the stove, add the walnut-sized butter, salt, and cayenne pepper.
Cool before using.
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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Mustard + walnuttop 9% of all pairsSmell alikestrongCooked together849 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Thicken the dressing as they cook and give it a rich, creamy body.
- Sour cream
- Adds moisture and a tangy, creamy base for the dressing.
- Vinegar
- Adds acidity that balances the sweetness and richness.
- Sugar
- Sweetens the dressing and balances the sharpness of the vinegar.
The step that matters
Cook until it thickens to the consistency of cold honey. Eggs thicken as their proteins set with gentle heat. Undercooked, the dressing stays thin; overheated, the eggs can scramble and curdle, so heat must be kept moderate and the mixture stirred.
Swap the walnut
How well each one fits the dish's main ingredients (cream, sugar, mustard, vinegar, egg, butter, pepper):
- Almondfits about as well
- Chestnutfits about as well
- Sesamefits about as well
- Walnutthe original
Fit is the average pairing score against cream, sugar, mustard, vinegar, egg, butter, pepper. 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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