If the LN2 is still liquid, then it is boiling. If you had a pocket of LN2 trapped inside the ice cream, it would boil and you would notice your ice cream venti

If the LN2 is still liquid, then it is boiling. If you had a pocket of LN2 trapped inside the ice cream, it would boil and you would notice your ice cream venting. If the LN2 was still liquid and dispersed throughout the ice cream, then the ice cream would be -196C and you would not be able to eat it. As long as your food or drink are not spewing off large amounts of gaseous nitrogen, there should be no liquid nitrogen in them.