Liquid nitrogen evaporates, and can cause violent oxidation of organic material. Ingestion of liquid nitrogen can cause severe internal damage, due to freezing of the tissues which come in contact with it and to the volume of gaseous nitrogen evolved as the liquid is warmed by body heat. In 1997, a physics student demonstrating the Leidenfrost effect by holding liquid nitrogen in his mouth accidentally swallowed the substance, resulting in near-fatal injuries. This was apparently the first case in medical literature of liquid nitrogen ingestion. In 2012, a young woman in England had her stomach removed after ingesting a cocktail made with
Cornish ice cream Cornish ice cream Cornish ice cream is a form of ice cream first made in Cornwall in the southwest of Great Britain. It is made with Cornish clotted cream, and may be made with sorbet. Today, it is still produced using milk from many farms in Cornwall, although Cornish ice cream (and brands of Cornish ice cream) are sold in supermarkets all over the United Kingdom. It may be made with regular ice cream and vanilla essence. Some companies of Cornwall, such as a company in East Looe, claim to make Cornish ice cream using only Cornish milk and cream.