Chừa chỗ cho sữa nở ra. Ghi ngày cho hộp sữa. Cho hộp sữa vào trong tủ đông. Trữ sữa tối đa trong 2 tới 3 tháng. Bạn có thể trữ đông sữa trong khay đá.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
When milk freezes, it takes up a little more space that when it's liquid. If your milk's container is filled to the brim, this can cause it to burst in the freezer, making a huge frozen mess (this is especially true for hard glass jugs). Luckily, this is easy to prevent — just pour off about a cup of milk so that you have a few inches of room at the top of the container. Doing this gives the milk plenty of room to expand. On the other hand, if you've already drunk more than a cup or two of your