Lovely little workshop with a local art professor on eco dying. Decided it's not my most favorite thing in the world, but then it's possible that it was more the material than the method.
Beware artists bearing plastic juice containers. It might not be consumable.
This is the alum you want for dying - the sort you pickle with, not bake with
I'm writing this well after the fact, so my memory is a little hazy on the details. It was summer, it was hot outside, we were enjoying each other's company and dabbling.