If you say the box is disposable, it is not made of steamed double skin milk, but of food additives. For example, there are two ways to make pudding, one is baking and the other is boiling. After the raw materials are cooked, they are baked in the oven. Cooking means buying pudding powder and mixing it with hot milk, and then freezing it in a mold. The same is true of double skin milk. Therefore, steaming should be carried in utensils instead of boxes, and only boiling is.