I think my method is the best- but am ready to be proved wrong.
Roasting tray about 2cm deep with sunflower oil, in the oven until hot. Pots (best are king edwards) not peeled, just cut into chip shape.
Chuck them in, after 20 mins pour more oil on top.
20 mins later drain them into a colander.
Put on sheets of kitchen towel, add salt and pepper, dab, then serve.