Page "Potato chip" Paragraph 47

Another type of potato chip, notably the Pringles and Lay's Stax brands, is made by extruding or pressing a dough made from ground potatoes into the desired shape before frying.

This makes chips that are very uniform in size and shape, which allows them to be stacked and packaged in rigid tubes.

In America, the official term for Pringles is " potato crisps ", but they are rarely referred to as such.

Conversely Pringles may be termed " potato chips " in Britain, to distinguish them from traditional " crisps ".