As a follow-up to (and in the spirit of) Mike Knowlden's "Waste Proposal Unit" here is a picture of the basil cuttings we bought from Norwich Market on the day of the event (14th May), which still survive in a glass of water on the windowsill back in London. The bunch of basil cost us £1, and has been used to cook for fifty two people in a gallery, and now continues to provide us with basil over a fortnight later.
