Yay! Something new to do with nettles, one of my favorite wild plants. And she is a wild one, so be careful how you handle her! I usually make infusions with nettle, and of course, in my office, it is a great support for allergy season, particularly combined with quercitin and other bioflavanoids.
You can probably find them growing wild, but you can also find them in bunches at the farmer’s market, if you don’t want to search and pick, yourself.
If you have some left over after making this pesto, just put it in a big stockpot, cover with boiling water, and let steep a few hours. Add raw honey if you like, although the flavor is quite mild. Then strain and drink warm or cold.