Why it works: Tarragon and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 2,547 recipes mention both. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Tartare Sauce
Ingredients
Directions
In a bowl, combine the raw egg yolks and oil.
Whisk together until thick and creamy.
Add tarragon vinegar and mix well.
Incorporate the minced onion, ensuring it is well distributed.
Adjust the seasoning to taste.
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 aroma chemistry they share, and how many recipes mention both.
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Tarragon + vinegartop 7% of all pairsAroma overlapmoderateMentioned together2,547 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Tarragon + oniontop 12% of all pairsAroma overlapmoderateMentioned together1,568 recipes
Shared aroma: coumarin (sweet, hay).
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Vinegar + oniontop 14% of all pairsAroma overlapmoderateMentioned together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Egg + tarragontop 22% of all pairsAroma overlaplowMentioned together1,789 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Egg + vinegartop 33% of all pairsAroma overlaplowMentioned together12,922 recipes
Shared aroma: acetic acid (sour, vinegar).
Egg and vinegar share little aroma chemistry, yet 12,922 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify the oil into a thick, creamy base that holds the sauce together.
- Oil
- Provides the fat that forms the body and richness of the sauce.
- Tarragon vinegar
- Adds acidity that brightens the rich egg and oil base.
- Onion
- Adds sharp, aromatic flavor and texture through its fine mince.
The step that matters
Whisk the yolks and oil until thick and creamy. Egg yolks are an emulsifier, so the oil must be added and whisked gradually so it disperses into tiny droplets. Adding it too fast can break the emulsion, leaving the sauce thin and oily.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (egg, tarragon, vinegar):
- Shallotbetter flavor fit
- Mustardbetter flavor fit
- Cucumberbetter flavor fit
- Onionthe original
Fit is the average pairing score against egg, tarragon, vinegar. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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