Chips: the most important input decision is which potatoes. Try and buy Bintje, they are best. If you cannot find them, take any other floury/starchy potatoes (not sure this is the correct expression, you need potatoes which are for labelled for mashed potatoes). If you want to improve, boil them for max five minutes after cutting them into shape (shorter boil if you do very thin fries). Then airfry - they are coming out perfect.