Why it works: Sorrel and chervil match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 247 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Sorrel
Ingredients
Directions
Prepare
Chop fresh sorrel, lettuce, chervil, and green onions.
Clean the herbs well and do not let them dry out.
Cook
Combine the chopped herbs with a little coarse sea salt and a good piece of fresh butter in a well-tinned copper vessel.
Cook the mixture in a bain-marie for 15 minutes until nicely reduced.
Let the mixture cool.
Store
Transfer the cooled mixture to wide-mouthed bottles.
Seal the bottles and store them for preservation.
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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Sorrel + cherviltop 1% of all pairsSmell alikestrongCooked together247 recipes
Shared aroma: coumarin (sweet, hay).
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Lettuce + cherviltop 1% of all pairsSmell alikestrongCooked together396 recipes
Shared aroma: coumarin (sweet, hay).
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Sorrel + lettucetop 1% of all pairsSmell alikestrongCooked together317 recipes
Shared aroma: coumarin (sweet, hay).
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Lettuce + oniontop 8% of all pairsSmell alikestrongCooked together3,562 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Sorrel + oniontop 10% of all pairsSmell alikestrongCooked together459 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
- Sorrel
- Provides the sour, acidic flavour that defines the dish.
- Fresh butter
- Adds fat and richness, carrying flavour and giving the reduced mixture a smooth texture.
The step that matters
Cook the mixture in a bain-marie for 15 minutes until nicely reduced. Gentle indirect heat from a bain-marie reduces the herbs slowly without scorching them or the butter. Overheating can burn the butter and turn the herbs bitter, so the mixture should be checked near the end.
Swap the onion
How well each one fits the dish's main ingredients (sorrel, lettuce, chervil, butter):
- Chivefits better
- Leekfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against sorrel, lettuce, chervil, butter. 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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