... trip years ago where one of the campers brought a solar cooker. she set it up in the morning, put together a stew in a dutch over (i think, my memory is a bit hazy at times) and left it to cook all day. when it was dinnertime, the stew was nice and cooked and hot and delicious. zol---halla, you might find http://solarcooking.org/ a useful and informative place to get some ideas