Smoking G9 ice cream is edible, of course. Smoking ice cream is made of liquid nitrogen, which is a convenient cold source, and has been more and more widely used in food industry, medical care, semen storage and low-temperature crushing in animal husbandry. Nitrogen is also the main raw material gas for synthetic ammonia production in chemical fertilizer industry. Liquid nitrogen is non-toxic, expels oxygen and is inert to food ingredients; Replaces the air in food, so that the oxidation of food is reduced to the minimum; Liquid nitrogen is not toxic, just freezing.