I had a gallon of milk that was getting near the expiration date and was still 2/3 full. There was no way I could use that much milk in 2 days, but I didn't want to throw it out. What's a girl to do? I poured the milk into ice cube trays and froze it. (I figured I can freeze breastmilk, why not try it with cow's milk? TMI?) It worked! Now I use those cubes for milk shakes or smoothies (this one was milk cubes, a banana and some pineapple juice).