The Swedish Biofuels AB fully synthetic jet fuel process is shown schematically below. In the first step of the process grain or wood is converted into a solution of sugars suitable for biochemical synthesis. The solution of sugars is fermented into a mixture of C2-C5 alcohols, which is then converted by chemical synthesis into a mixture of C4-C20 hydrocarbons. These hydrocarbons are subsequently separated into biological gasoline, kerosene and diesel by rectification.