Is Nitrogen-Infused Coffee Safe to Drink? Nitrogen gas has been used in beverages for hundreds of years. It's the same thing you'll find in some of your favorite beers. The gas is safe to drink and an alternative to carbon dioxide.
The main point is that liquid nitrogen must be fully evaporated from the meal or drink before serving, said Peter Barham of the University of Bristol's School of Physics. It can safely be used in food or drink preparation, but it should not be ingested.