Lava Stone Steak Set of 4 The Lava Stone Steak Set creates mouth-watering food, for use at home, dinner parties, or a gift. They can be used both indoors and outdoors. Simply preheat the rock in the oven at 550-580F for 1hour or on the gas or electric hob for 30minutes add your favourite sauces and sizzle away with the hot searing process trapping all the flavours and moisture inside your meat or fish. It's a great healthy way to eat with no oils or fats used in the cooking process. A wide variety of meat, fish and vegetables can be cooked on the rock. Includes: x4 Lava Stone (20cm x 13cm x 3cm) x4 Porcelain Rectangle Plate (20cm x 10cm x 2cm) x4 Stainless Steel Underplate (22cm x 14.5cm x 1cm) x4 Wooden Board (27cm x 24cm x 3cm) Weight 4kg Each