We sometimes freeze gallon jugs of milk after pouring out a small amount to allow for expansion. Was surprised at how long it takes to thaw. Put it in the fridge to thaw about 3 days before you need it. Give it a good hard shake before using. Was fine for coffee, drinking and making yogurt. We lived in Spain for a bit and they had no milk in the cooler, just the shelf stable boxes. Shopped around brands until we had a favorite for drinking.