You use a grill pan for grilling meat, fish or vegetables at high temperature. The hot pan ensures that the ingredients quickly seal and all juices are retained. The baking surface of a grill pan consists of ridges. This creates the characteristic grill stripes during grilling. These ridges also ensure that moisture and fat from your fish, meat or vegetables is caught between the ribs, so that you bake fat-free and an extra crispy outer surface is created.