I bought a bunch of cilantro today at my usual produce market and when I picked it up, I felt a couple of pricks on my fingers that started itching a lot. When I got home and started preparing said cilantro, I found a twig of something that is definitely not cilantro. I don't know if that was what caused the earlier itching, as I managed to not touch it.
Could it be some kind of nettle? How could it make its way into commercial cilantro?