Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Nairobi Startup Pushes Cleaner Home Cooking Fuel Mohammad Yusuf NAIROBI, KENYA -- Catherine Mutua she has always used charcoal and gas to cook for her young family. But, the source of energy she grew up with was becoming too expensive. She found out that she can also cook with another kind of fuel, ethanol. "Before I was using the gas and charcoal," Mutua said. "I shifted after I was educated how the fuel is cheap, safe for the kids, for the environment." Mutua gets the ethanol from a filling station set up by the Koko Networks, a Nairobi-based start-up. The company also sells ethanol stoves that cost a customer about $70. .