The cold-weather rations issued by the U.S. government are the best source of food for a cold-weather emergency. Labeled as Meals, Cold Weather-MCW for short-each meal is sealed in a waterproof, airtight container and does not require cooking. The heavy-duty plastic bag the meal comes in can be used as a water container and each package has matches, toilet tissue, cookies, soup, candy, an entree, crackers and other foods to provide your 4,500 calories. If you have trouble finding these rations (eBay is about the only place they're available), simply take three standard Meals Ready to Eat (MREs) for your daily rations. One advantage to the cold weather meals is that they limit the protein content and sodium to 5 grams per ration to reduce the risk of dehydration. If you decide to create your own meal pouches, emulate the MCW mix of about 4,500 calories in a blend of 8 percent protein, 32 percent fat and 60 percent carbohydrates.