A potato chip (American English) or crisp (British English) is a thin slice of potato that has been deep fried, baked, kettle cooked, or popped until crunchy. Potato chips are commonly served as a snack, side dish, or appetizer. The basic chips are cooked and salted; additional varieties are manufactured using various flavorings and ingredients including herbs, spices, cheeses, and artificial additives.
"Crisps", however, may also refer to many different types of savory snack products sold in the United Kingdom and Ireland, some made from potato, but some made from corn, tapioca or other cereals, just as there are other varieties of chips in the United States.
Potato chips are a predominant part of the snack food market in Western countries. The global potato chip market generated total revenues of US$16.49 billion in 2005. This accounted for 35.5% of the total savory snacks market in that year ($46.1 billion).[1]