Cocoa butter, also called theobroma oil, is the pale-yellow, pure vegetable fat of the cacao bean. It is used to make solid chocolate bars, and mixed with cocoa powder to make solid pieces of chocolate. Cocoa butter is removed from the cacao beans and can be used to make chocolate, pharmaceuticals, ointments, and toiletries. Cocoa butter has a mild chocolate flavor and smell. It is one of the most stable fats known, which means that it takes a long time to go rancid.