Chips were long made in a batch process, where the potato slices are rinsed with cold water to release starch, fried at a low temperature of 300 °F (150 °C), and continuously raked to prevent them from sticking together.

Industrial advances resulted in a shift to production by a continuous process, running the chips through a vat of hot oil and drying them in a conveyor process.

Some small producers continued to use a batch process, notably in Maui.
In 1980, inspired by the Maui Chip, an entrepreneur started Cape Cod Potato Chips to produce thicker, batch-cooked "Hawaiian style" potato chips, which came to be known as kettle-style (US) or hand-cooked (UK) chips and became a premium, "gourmet" item.
Kettle chips are thicker and the surface starch is not rinsed off, resulting in a style of chip called "hard bite".
Chips were long made in a batch process, where the potato slices are rinsed with cold water to release starch, fried at a low temperature of 300 °F (150 °C), and continuously raked to prevent them from sticking together.
Industrial advances resulted in a shift to production by a continuous process, running the chips through a vat of hot oil and drying them in a conveyor process.
Some small producers continued to use a batch process, notably in Maui. In 1980, inspired by the Maui Chip, an entrepreneur started Cape Cod Potato Chips to produce thicker, batch-cooked "Hawaiian style" potato chips, which came to be known as kettle-style (US) or hand-cooked (UK) chips and became a premium, "gourmet" item. Kettle chips are thicker and the surface starch is not rinsed off, resulting in a style of chip called "hard bite".
Potato chip