A stable stand for the parabolic dish and a simple system for turning it upside down when not in use also contribute to safety and convenience. The SK cookers can cook all kinds of foods. A big advantage over simpler cookers is that the SK cookers can fry foods. They are impressively powerful--they can boil 48 liters of water per day. They can cook from about two hours after sunrise to two hours before sunset in the sun, but frequent repositioning is needed when the sun is very low in the sky.