Complex sentence: Pork scratchings or pork cracklings, a popular snack food in some parts of the United Kingdom, are not the same as pork rinds even though both are snack foods made from pig skin.
Split into simpler sentences: Pork scratchings or pork cracklings is a popular snack food in some parts of the United Kingdom. They are not the same as pork rinds even though both are snack foods made from pig skin.