Chervil

Fresh herb weighed in grams; no spoon or count conversion.

Instead of Chervil

Chervil's delicate anise-parsley note has no true equal; coriander or dill are only approximations.

Coriander leaf
Use the same weight, chopped, added at the end. It is milder and lacks chervil's anise note; add a pinch of fennel seed if you want that hint.
Dill leaves
Use 50–70% of the weight, chopped. Dill is stronger and more aniseed-like; add it late so it does not overpower the dish.
Coriander leaves
Use the same weight as a mild green herb. The dish will lose the delicate anise-parsley character but stay fresh and green.