1, if you do not have lime, then you can use food-grade calcium hydroxide, because the lime powder usually used to make powdered ice is actually slaked lime, whose main ingredient is calcium hydroxide, so there is not much difference in the effect of powdered ice made from food and lime powder - grade calcium hydroxide.

2, toothpaste can also be used instead of lime powder as ice powder coagulant, because the main component of toothpaste is calcium carbonate, the same as natural limestone. When making ice powder, you only need to change the step of adding lime powder to adding precipitated toothpaste. But you need to be aware of the best options for fruit-flavored toothpaste.