Stinging Nettle Pesto
Nettles can be found at farmers' markets. In a pinch, you can substitute dandelion greens or spinach.
When storing extra pesto, place in a covered container and cover the surface with a layer of olive oil.
When making nettle pesto pasta, reserve 1/4 cup pasta cooking water and stir in a couple of tablespoons of the pesto mixture. It makes for a creamier pasta.