Ultra Light Original light weight cast iron grillpan from Ronneby Bruk is a frying pan made from lightweight cast iron and features a stainless steel handle with a silicone insert for a comfortable and cool grip. The cast iron grill pan has a large flat ridged cooking surface and is also pre-seasoned with rapeseed oil, meaning you can start using it immediately. There are many good reasons to choose a frying pan made of lightweight cast iron, mainly because it weighs significantly less and comes with the same advantages as regular cast iron.