I got sent an email from a mailing list about this project. Pilot Publishing have created this funny little eco cafe in Gunpowder Park. They've got all sorts of events going on throughout spring including:
'February 14th Crititical Mass Food Search within 6 mile radius 10.00am - 3.00pm Meet at Energy Cafe with your bike, maps provided. Aim is to source as much locally grown food as possible, including wild food, and gather back at the cafe with findings to cook up a sunset dinner.'
I like the sound of that one. See more here