...[Breaking] the country's dependence on "dirty" fuel is the aim of a for-profit venture called CleanStar that began selling ethanol cooking stoves in the capital, Maputo, this year. The ethanol is made from cassava, or mandioca, which is grown in virtually every backyard here...Designed by the Swedish firm Dometic, the stove was first used on a large scale in Ethiopian refugee camps...[The] stove [does not] produce black, asthma-causing smoke the way charcoal burners do. So it is safe to cook with inside the house. [also refers to Novozymes, Bank of America Merrill Lynch]