To immerse raw ingredients completely in hot fat to cook them eg deep-fried fish and chips. The pan used for deep frying should be deep enough so that is only half full of fat before the food is added.
A large electrically heated pan which is used for deep-frying food in fat. Deep-fat fryers are thermostatically controlled which makes them safer than using a traditional frying basket and pan and they can be set to a range of specified temperatures. The food is cooked in a sealed container which avoids any fat spitting and minimises cooking odours.