This is a Jamie Oliver recipe:
Cut unpealed potatoes into chip shapes, deep-fry for twelve minutes at 140°C/284°F, let them cool off and then fry them again at 180°C/356°F. It's a dementedly fast & easy process.
The homemade mayonnaise recipe is even faster. It's a Kenji López-Alt recipe:
https://www.seriouseats.com/two-minute-mayonnaise