This tent-like machine turns your food scraps into cooking gas
Home Biogas is a backyard appliance that turns your food scraps into cooking gas. Pour the food waste into the machine, bacteria digests it into gas, and the gas moves through a pipe to your stove or to a gas-powered lamp. It can also produce liquid fertilizer. This DIY device can be blown up in your backyard and claims to produce up to 2 hours of gas a day.?