Solar cooking is a simple concept - sunlight is concentrated into the solar oven or thermos by reflective panels and is then trapped there through insulation. This creates a perfect environment for cooking - cakes, breads, stews etc. There isn't much you can't cook by the power of simple sunlight. Solar ovens can be like having an oven, stove top, slow cooker, kettle, dehydrator and thermal cooker all rolled into one.