Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
French Salad Dressing
Ingredients
Directions
In a cup, combine salt and pepper with 1 tablespoon of oil.
Mix thoroughly, then add the remaining oil and vinegar.
For onion flavor, peel and grate an onion to extract juice, adding a few drops to the dressing.
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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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + oniontop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Vinegar + peppertop 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
- Oil
- Forms the body of the dressing and carries flavor, giving it a smooth, rich mouthfeel.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness of the oil.
The step that matters
Mix thoroughly before adding the remaining oil and vinegar. Salt dissolves in little liquid, so blending it fully into the first tablespoon of oil helps it distribute evenly. Adding the rest of the liquids too soon can leave grains of salt unevenly dispersed and the dressing tasting patchy.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (vinegar, pepper):
- Capsicumfits better
- Mustardfits better
- Cabbagefits better
- Onionthe original
Fit is the average pairing score against vinegar, 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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