Chervil is one the indispensable musts of the famous Green Dressing (Salsa Verde), which was highly estimated by the family of the famous German poet Goethe.
It must usually contain seven herbs, mashed boiled yolk and mayonnaise. Delicious with young potatoes, cooke in the skin, then peeled.

The herbs: parsley, chives, chervil, sorrel, dill, borage, cress, tarragon, lovage, lemon balm

recipe
another one
from Wikipedia with references to the French sauce verte and the Italian salsa verde
Unfortunately all in German - but I am too idle to translate.

Eat and enjoy