I've gotten a few questions about my reference to
They are fuel efficient stoves which can be made
from a variety of substances from empty tin cans to metal piping to
ceramics. The most efficient designs make it possible to cook food with
1/3 or less of the wood normally used. They help reduce deforestation,
time spent gathering wood, and air pollution.
There is some information, diagrams, pictures, and
efficiency information at the Aprovecho site:
If some of the community gardeners are interested
in expanding their skills and want to grow some of their own cooking fuel, they
could have fun with this.