My first project of the year that I am currently working on is anthotyping. So far this image, made out of spinach and 91% rubbing alcohol, is the only one to work. The other juices I tried were red onion and goldenrod, both of which have showed no change.
I coated watercolor paper with the solution and let it dry, then stacked it in a clear frame with a paper positive. It took three days at 3-5 hours of sun per day to complete.