Sourgrass

While Michelle and I were out at all the nurseries yesterday she told me that she had just found out that sourgrass was edible, and she was contemplating using it for an ice cream flavor. I wasn't sure what it was that she was talking about, but she said "oh, it grows everywhere you'd know it if you saw it," When we passed by some, she pointed it out and I realized it was the stuff that fills my neighbors backyard and spills under the fence into our yard.

Here's some more info about it, apparently it's South African, and super invasive. Oxalis pes-caprae
Bermuda Buttercup, Yellow Sour Grass, Cape Sorrel, African Woodsorrel, Sour Sob