Prince Edward Island Potatoes from Prince Edward Island. Prince Edward Island Potatoes Prince Edward Island Potatoes (also known as PEI Potatoes) refers to the brand and geographic identifier for potatoes grown and packaged in Prince Edward Island, a Maritime Province on the Atlantic coast of Canada. In a similar fashion to potatoes grown in other parts of North America (such as Idaho), Prince Edward Island Potatoes are marketed and trademarked as being grown in the unique growing conditions and climate of Prince Edward Island. Prince Edward Island's growing conditions are characterized by warm summers, relatively cold winters, significant natural precipitation, and a unique red
Instant mashed potatoes particular have been freeze-dried since at least the time of the Inca empire, in the form of chuño; another example is in Japanese Ainu cuisine. , titled "Dehydrate Potatoes and Process of Preparing the Same", and describing a product that was to be reconstituted in hot water, was applied for in 1905 and granted in 1912. Flake-form instant mashed potatoes date back at least to 1954, when two United States Department of Agriculture researchers were issued a patent for "Drum drying of cooked mashed potatoes" (), which describes the end product specifically being "as a thin sheet or flake". In