Mountain House Pro-Pak Sweet & Sour Pork with Rice (1 Pouch) Mountain House Pro-Pak entrees are vacuum packed to give you a hearty 16-ounce entree from a compact four-ounce package! Just mix contents with boiling water in the pouch provided, let stand for a few minutes, and then serve resealable foil pouch helps retain warmth There's no wasted space for air, they fold up easily, so you can fit more in your backpack. 7 year shelf life Made in the USA Mountain House Pro-Pak entrees are vacuum packed to give you a hearty 16-ounce entree from a compact four-ounce package! Just mix contents with boiling water in the pouch provided, let stand for a few minutes, and then serve; resealable foil pouch helps retain warmth There's no wasted space for air, they fold up easily, so you can fit more in your backpack. Made in the USA