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 ↓
Montpellier Butter
Ingredients
Directions
Prepare the herbs
Blanch the watercress, parsley, chervil, chives, and tarragon in boiling water.
Add the chopped shallots and spinach leaves, then drain and cool.
Press the mixture in a towel to remove excess water.
Make the paste
Pound the mixture in a mortar with the pressed capers, gherkins, garlic, and anchovies.
Mix the paste with the butter until smooth.
Finish the butter
Add the yolks of the boiled eggs and the raw eggs gradually, then pour in the oil.
Strain the mixture through a fine sieve.
Stir the butter well with a wooden spoon and season with salt and cayenne.
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.
-
Chervil + tarragontop 1% of all pairsSmell alikestrongCooked together824 recipes
Shared aroma: estragole (anise, licorice).
-
Shallot + caperstop 1% of all pairsSmell alikestrongCooked together405 recipes
Shared aroma: coumarin (sweet, hay).
-
Watercress + cherviltop 1% of all pairsSmell alikestrongCooked together59 recipes
Shared aroma: coumarin (sweet, hay).
-
Chervil + chivetop 1% of all pairsSmell alikestrongCooked together370 recipes
Shared aroma: coumarin (sweet, hay).
-
Chervil + caperstop 1% of all pairsSmell alikestrongCooked together135 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Provides the rich fat base and a smooth, spreadable body.
- Raw eggs
- Emulsify with the oil and help bind the butter into a smooth mixture.
- Boiled egg yolks
- Add richness and help stabilise the emulsion with the oil.
- Oil
- Adds fat and smoothness, loosening the mixture while staying emulsified.
- Parsley
- Supplies most of the fresh herb flavour and green colour.
- Anchovies (in the method)
- Add salty, savoury depth that rounds out the herbs.
The step that matters
Add the eggs gradually before the oil. Egg yolks are natural emulsifiers. Adding them slowly lets them absorb the oil and butter fat gradually, so the mixture stays smooth instead of splitting into greasy droplets.
Swap the spinach
How well each one fits the dish's main ingredients (watercress, parsley, chervil, chive, tarragon, shallot, capers):
- Beetrootfits better
- Lettucefits better
- Welsh onionfits better
- Spinachthe original
Fit is the average pairing score against watercress, parsley, chervil, chive, tarragon, shallot, capers. 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 herb butter 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.
Spinach Soup50 recipes
Cream of Spinach29 recipes
Creamed Spinach Soup19 recipes
Spinach and Eggs8 recipes