Can tofu brain have white floating objects to eat?

There are white floating objects in tofu brain, which are the precipitation of calcium carbonate and magnesium salt, which are related to the water quality and temporary hardness of tofu brain. Tofu will precipitate when boiled, which is harmless to the body. If you want to eliminate and soften the water, you can use cation exchange resin, or you can use pure water process and permeate membrane to make water.