There are three distinct types of pork rind snacks made in the UK. Traditional Pork Scratchings are made from shank rind with a good layer of fat underneath and cooked just once, for a period of time to ensure the correct level of crunch. Pork crackling is made from shoulder rind and is typically fried twice. It is first rendered at a low heat, and then cooked at a higher temperature for a less fatty, crispier result. Pork crunch, which is made from back rind is double-fried to become a large, puffy crunchier snack.