Sun Oven solar cooking oven is an excellent way to cook without harming the environment and is ideal for emergency preparedness to cook food storage. The Global Sun Oven and All American Sun Oven can both be used to cook that you would normally cook in a conventional oven. Cook times are about 20% longer than a conventional oven. You must have a clear view of the sun for the Sun Oven to operate at peak efficiency. Options include a roasting pot, stock pot with steamer insert, bread loaf pans, cookie sheets, and water pasteurization indicator.