Mountain House Freeze-Dried back country food. Oregon Freeze Dry began the manufacture of Mountain House backpacking/survival foods in 1967, and is the only manufacturer in the United States which owns and operates its own, USDA approved, freeze drying plants and packaging facilities. Other brands of backpacking foods mix freeze dried and dehydrated ingredients in their entrees. Dehydrated ingredients cost less to produce, and usually require soaking, and a longer cook time. The Mountain House product line consists of over 40 products, including single-serve, double-serve, and four-serve entrees. The pouches include a convenient inner-preparation pouch, which is the most convenient method of preparing food on the trail. So stock up and have fun……….