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 ↓
Sauce Tartare
Ingredients
Directions
In a small bowl, combine the egg yolks, vinegar, and salt.
Whisk the mixture quickly until it forms a creamy consistency.
Gradually add the oil drop by drop, mixing well.
Incorporate the mustard, parsley, and cayenne, mixing thoroughly.
Add Tournade's Kitchen Bouquet for improved flavor, if 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 + parsleytop 8% of all pairsSmell alikestrongCooked together2,588 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Vinegar + parsleytop 16% of all pairsSmell alikemoderateCooked together6,477 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Egg + parsleytop 21% of all pairsSmell alikemoderateCooked together18,765 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Egg + mustardtop 28% of all pairsSmell alikemoderateCooked together9,210 recipes
Shared aroma: (e)-2-octenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify with the oil and thicken the sauce into a creamy body.
- Oil
- Adds richness and fat that, emulsified with the yolks, gives the sauce its body.
- Vinegar
- Adds acidity that brightens the sauce and balances the richness of the oil.
- Mustard
- Contributes sharpness and helps stabilise the emulsion.
The step that matters
Adding the oil drop by drop. Egg yolks can only hold oil in suspension when it is added slowly while whisking. Adding it too fast breaks the emulsion, leaving the sauce oily and thin instead of creamy.
Swap the parsley
How well each one fits the dish's main ingredients (egg, vinegar, mustard):
- Tarragonfits better
- Capersfits better
- Dillfits better
- Parsleythe original
Fit is the average pairing score against egg, 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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