cartons, method of packaging wine in what are effectively cardboard ‘bricks’, sometimes known as tetrapacks, that has been particularly popular for everyday wines in Latin American countries such as chile. They are starting to become more popular elsewhere in the light of concerns about sustainability. Cartons are light, made of renewable materials, exceedingly space-efficient, non-breakable, and easy to recycle. They also offer producers a much larger labelling area than bottles. They are made mainly from paperboard, with polyethylene and aluminium, often with a resealable plastic closure, and can keep wine fresh for between 18 months and two years.