Step 1: Materials
So you'll need
Maris Piper/King Edward/Desiree will all produce a good chip.
About 200g of spuds per person should yield a good portion. Try and use good sized spuds 70x70mm + (adult size fist should give a single portion)
About 500ml (if cooking 1kg of spuds) of quality vegetable oil.
A sharp wide knife or peeler.
A good quality stainless steel saucepan that will be 1/3 full or less with 500ml of oil (this is a very important safety consideration due to the boiling oil)
A stainless steel colinder
Some sea salt