Need To Know News 20-03-11 Original post Cached copy Gardening Enthusiast Shows How to Make Cooking Gas from Food Scraps and Manure. Bacteria Do Most of the Work. Need To Know News - 2020-03-11 - Original post - Cached copy HomeBioGas is a bacteria digester that transforms organic waste such as food scraps and manure into methane gas for cooking. It also produces liquid fertilizer as a byproduct. The device needs a warm climate for bacteria growth.