If it is the supermarket to buy vacuum-packed patties then generally have been fried, then buy back can be directly unpacked and then open the pan under a bit of oil to fry a frying strip of commercial street will be, should be able to eat, but why do you say that some of the patties need to be soaked in water, that is because it is their own patties, then that glutinous rice is not easy to be decomposed by water, soak in water can also avoid contact with the air to keep it from rotting and will not be dried out. Soaking it in water also prevents it from coming into contact with the air and keeps it from rotting and drying out.

Refrigerated storage can be, because the glutinous rice after soaking, the tissue cells in the water rupture, placed in room temperature, it is easy to be infected by bacteria and microorganisms and lead to deterioration of the problem, the refrigerator's low temperature can inhibit the bacteria and microorganisms.