A Biomass Briquette is a compressed brick made of agricultural waste, used for heating and cooking. It is very efficient, renewable, and carbon neutral. Common materials are sawdust, charcoal, grasses, and other biological materials. The following links will describe the process, and how to build your own press.
A rocket stove is a efficient way to use them. There are many youtube video’s on rocket heaters, and we have plans at http://www.green-trust.org/products/