Why it works: Chervil and tarragon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 824 recipes. Both carry estragole, which smells anise, licorice. The science ↓
Tartar Sauce
Ingredients
Directions
Prepare the base
In a bowl, combine the chopped shallots, chervil, and tarragon.
Add the mustard, salt, and pepper.
Emulsify and season
Gradually thin the mixture with vinegar and oil while stirring continuously.
Taste and adjust seasoning to ensure it is not too salty or sour.
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.
-
Chervil + tarragontop 1% of all pairsSmell alikestrongCooked together824 recipes
Shared aroma: estragole (anise, licorice).
-
Shallot + cherviltop 1% of all pairsSmell alikestrongCooked together266 recipes
Shared aroma: coumarin (sweet, hay).
-
Shallot + tarragontop 1% of all pairsSmell alikestrongCooked together602 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Shallot + mustardtop 1% of all pairsSmell alikestrongCooked together859 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Tarragon + mustardtop 1% of all pairsSmell alikestrongCooked together901 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oil
- Forms the body and richness of the sauce as the main fat.
- Vinegar
- Adds acidity that brightens the sauce and balances the richness of the oil.
- Mustard
- Helps bind the oil and vinegar into a stable emulsion and adds sharpness.
- Shallots
- Provide a mild, onion-like sharpness and aroma.
- Tarragon
- Adds its distinctive aromatic, anise-like flavour.
The step that matters
Gradually thin the mixture with vinegar and oil while stirring continuously. Oil and vinegar do not mix on their own. Adding the liquids slowly while stirring lets the mustard emulsify them into a smooth, stable sauce. Adding them too fast can cause the sauce to split and look greasy.
Swap the mustard
How well each one fits the dish's main ingredients (shallot, chervil, tarragon, pepper, vinegar):
- Chivefits better
- Lettucefits about as well
- Mustardthe original
- Beetrootfits about as well
Fit is the average pairing score against shallot, chervil, tarragon, pepper, vinegar. 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.
More tartar sauce recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Chicken Salad623 recipes
Salad Dressing491 recipes
Tomato Salad179 recipes
Cold Slaw160 recipes