Peel the potatoes and cut into chips 5cm long by 1cm wide
Rinse the chips under cold water until the water runs clear β this will remove some of the starch
Add the chips to a saucepan of cold water and bring to a gentle simmer. Simmer the chips until they are soft to the touch but not cooked all the way through, about 15mins.
Drain the chips and chill in the fridge until dry and cold β this will take at least 30 minutes
Preheat a deep fat fryer to 130β°C
Fry the chips in batches for 5β8 minutes until a crust forms but with no colour. Remove the chips and place them on a baking tray. Chill in the fridge again for approximately 30 minutes Once chilled, turn the deep fat fryer up to 180β°C
Deep-fry the chips in batches for a second time for 4β7 minutes until crisp and golden β donβt overcrowd the fryer as this will cause a drop in the oil temperature
Drain on absorbent kitchen towel and season with salt before serving