The oil and fat in food consist of fatty acids, which are chains of carbon and hydrogen atoms. (sciencemag.org)
They make good fuels because the energy stored in the bonds between carbon and hydrogen is abundant and easy to release in combustion with oxygen. (discovermagazine.com)
It has been used for almost a century to create liquid fuels, which are made of long chains of molecules containing only carbon and hydrogen. (news.wsu.edu)