Cook with the sun

Gather together your materials. You can use two cardboard boxes, one being a little smaller than the other. You can build a more permanant box out of wood. Get a piece of plexiglass, a sheet of glass or just stretch some plastic wrap over the top of the box. Get a thermometer, some reflective material to direct the sun into the box. Use some black craft paper to line the inside of the box or paint it with some non-toxic paint. Also some material to put between the two boxes to create some insulation.

Place one cardboard box inside the other. There should be a couple inches of space between the two.

You can fill the space under the inner box and between the four sides with crumbled newspaper, styrafoam or anything you can find to provide insulation.

Line the sides of the inner box with foil, this will act as a reflector. And paint the bottom of the inside black to help absorb the heat.

Cut out a piece of cardboard a little bigger than the opening of your box. Line this with foil to act as a reflector and attach to outside of box to reflect the suns rays into the box. You can also use one of those auto window shades that comes in a foil type of material.

With the box situated towards the sun, place your food in a container into the box. Cover the box with a sheet of glass, plexiglass or stretch plastic over it. Adjust the reflector so it can reflect some of the suns rays into the box. Another method is to place the food container in an oven bag, this way you may be able to do without a cover on the box.

You can place an oven type thermometer in the box to monitor the temperature.