Go to Dollar Tree. For $1.00 a quart the have shelf stable milk. I just bought some yesterday that does not expire until April 2015. Prechill a quart before using. I always carry 10 - 12 quarts on trips. It is perfect to give to the less fortunate that we all see and some of us help while on the road. Enough for a day for them and if you have some cereal they have breakfast and a nourishing drink. When we have given it to people we help it usually lasts about an hour as it is a real treat for them and it is nourishing as well.
Groceries sell the same thing for about $2.50 a quart