Portable cooker! Stainless steel unit has a unique gasification and secondary combustion process for a more complete burn. Result: you'll use fewer twigs to achieve a boil. Actually cooks the smoke out of wood. No need to carry fuel canisters, burns local twigs. Nests in most pots. 3 1/2" x 3 1/2" x 4"h., 9 ozs.