2. Soaking soybean milk will agglomerate, because there is a lot of sugar in soybean milk powder. When sugar melts, it will naturally stick together. Don't brew this kind of thing with hot water, because soybean milk powder will form a layer of oil when it meets water, and hot water will agglomerate the oil, so the powder inside will not be washed away easily, but it will not be washed away with cold water, which is not uniform at all, unless you buy a product that can be dissolved in cold water.
3. Soymilk powder is best brewed with warm water. If there is no warm water in the office, it is the same to pour hot water first and then add cold water to stir immediately. You don't need to mix warm water before pouring it, but don't pour it all at once. First, pour some water to make the powder paste, stir it evenly, and then add water to what you think is appropriate.