Peanut butter contain at least 90% peanuts; the remaining <10% usually consists of "...salt, a sweetener, and an emulsifier or hardened vegetable oil which prevents the peanut oil from separating". In the US, no product labelled as "peanut butter" can contain "artificial sweeteners, chemical preservatives, [or] natural or artificial coloring additives." Some brands of peanut butter are sold without emulsifiers that bind the peanut oils with the peanut paste, and so require stirring after separation. Most major brands of peanut butter add white sugar, but there are others that use dried cane syrup, agave syrup, or coconut palm sugar. Organic and artisanal
Vegetable oil recycling has various names including green diesel or renewable diesel. In the past waste oils were collected by pig farmers as part of food waste from pig swill bins. The grease was skimmed off the swill tanks and sold for further processing, while the remaining swill was processed into pig food. Vegetable oil recycling Vegetable oil recycling is increasingly being carried out to produce a vegetable oil fuel. In the UK, waste cooking oil collection is governed by the environment agency. All waste cooking oil collections need to be carried out by a company registered as a waste carrier by the