His recipe came with a warning!
"Heat a deep-fat fryer to 180C/350F, or until a cube of bread sizzles and turns brown after about a minute. (CAUTION: hot oil can be dangerous. Do not leave unattended. Deep-fat frying frozen chips is potentially dangerous, due to the high water content of the chips. Be sure to put the chips in the fryer a few at a time – you will certainly need to cook them in batches.)"
http://bbc.in/1dbdWk0