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
Wall's (ice cream) supermarket brands and to a lesser extent from Nestlé (absorbing the Rowntree's and Lyons Maid brands) and Mars spin-off ice cream products. In 2013 Wall's expanded into the UK confectionery market following a licensing deal with Kinnerton Confectionery, leading to the introduction of ambient chocolate bar variations for the Magnum, Cornetto and Mini Milk ice cream brands. Wall's (ice cream) Wall's is an ice cream brand owned by the Anglo-Dutch food and personal care conglomerate Unilever. Originating as an independent food brand in the United Kingdom, Wall's is now part of the Heartbrand global frozen dessert subsidiary of Unilever, used