Best Storage:
Fridge
Try not to store for long in your refrigerator door as this is the warmest part of your fridge.
Freezer?
Yes
Freeze before use-by date. Take approx. one cup of milk out so it has room to expand when frozen.
Use it up!
Place into your fridge to defrost. The fats within the milk will have separated so shake vigorously when defrosted.