Perfect idea for growing, maybe as an extension to cafe? Note: MUST visit Lammas. tour of Simon Dale's cob house-- I especially love the whole side of the house is a greenhouse!
cob-house-stove-The wood stove is surrounded by cob for thermal mass, and includes a warm nook with shelf to culture yogurt.
Groundfridge chills food without electricity. I'm curious how this differs from a basic root cellar.