The U.S. Food and Drug Administration (FDA) has alerted consumers and retailers of the potential for serious injury from eating, drinking, or handling food products prepared by adding liquid nitrogen at the point of sale, immediately before consumption. These products are often marketed under the names “Dragon’s Breath,” “Heaven’s Breath,” “nitro puff,” and other similar names.
Liquid nitrogen, although non-toxic, can cause severe damage to skin and internal organs if mishandled or accidently ingested due to the extremely low temperatures it can maintain. The FDA has become aware of severe—and in some cases, life-threatening—injuries, such as damage to skin and internal organs caused by liquid nitrogen still present in the food or drink. There has also been a report of difficulty breathing after inhaling the vapor released by liquid nitrogen when added immediately before consumption. Injuries have occurred from handling or eating products prepared by adding liquid nitrogen immediately before consumption, even after the liquid nitrogen has fully evaporated due to the extremely low temperature of the food.
In general, other foods treated with liquid nitrogen prior to the point of sale and before consumption, for example some frozen confections, are treated in such a way that results in the complete evaporation of liquid nitrogen before reaching the consumer and are no longer at an extremely low temperature, and therefore do not pose a significant risk of injury.