Complex sentence: Kettle's most famous product is their batch-cooked potato chip; which derives its name from the original method of manufacturing the chips, which involved cooking thin sliced potato wedges in a kettle.
Split into simpler sentences: Kettle's most famous product is their batch-cooked potato chip. The chips derive their name from the original method of manufacturing the chips, a process that involved cooking thinly sliced potato wedges in a kettle.