Complex sentence: For cooking purposes the design keeps the cooking vessel in contact with the fire over the largest possible surface area a pot skirt can be used to create a narrow channel which forces hot air and gas to flow along the bottom and sides of the cooking vessel.
Split into simpler sentences: For cooking purposes the design keeps the cooking vessel in contact with the fire over the largest possible surface area. A pot skirt can be used to create a narrow channel which forces hot air and gas to flow along the bottom and sides of the cooking vessel.