Bacterial Decay Bacteria feed on dead plants and animals, producing a gas called methane. This is a natural process that happens whenever waste decays. Methane is the same thing as natural gas, the gas sold by natural gas utilities. Adding a yeast to biomass produces an alcohol called ethanol. This is how wine, beer, and liquor are made.
Wine is just fermented grape juice.
Conversion Biomass can be converted into gas or liquid fuels by using chemicals or heat. In India, cow manure is converted to methane gas to produce electricity. Methane gas can also be converted to methanol, a liquid form of methane. Most biomass used today is home grown energy. But any organic matter can produce biomass energy.