I have become more and more interested in trying out plant dyes, particularly as I have so many possibilities growing in the garden. There were a couple of old red cabbages that had bolted, so having researched the web and found references to making bundles (thanks especially to Wendy Feldberg), this is how I decided to proceed. All bundles were first soaked in a 20-25 % vinegar solution, then steamed for a couple of hours. turning the bundle over half way through. I unwrapped them the following day. I know some people leave them for much longer – I should experiment, but am impatient by nature!