What do you cook with sorrel or chervil?

Years ago I bought a French cooking magazine that had a "retro cuisine" section with a recipe for a sorrel soup with chervil that looked appealing, but I couldn't find either sorrel or chervil at the time. Last week both appeared at the farmer's market, and I remembered the soup. I made it, and it was fantastic!

Now I'm sorrel and chervil crazy, and knowing that these aren't herbs I'll be able to pick up regularly throughout the year, I'm curious about any favorite recipes that include them that I can cook now.

I searched and found this recipe for Nora Ephron's sorrel soup: http://chowhound.chow.com/topics/856986

Other than that, what do people cook with chervil and/or sorrel?