A well-designed solar oven can reach internal temperatures of 350 to 400?F, which means it can purify water, roast meats, and even steam vegetables.

A well-designed solar oven can reach internal temperatures of 350 to 400?F, which means it can purify water, roast meats, and even steam vegetables.

A well-designed solar oven can reach internal temperatures of 350 to 400?F, which means it can purify water, roast meats, and even steam vegetables.

A well-designed solar oven can reach internal temperatures of 350 to 400?F, which means it can purify water, roast meats, and even steam vegetables.

A well-designed solar oven can reach internal temperatures of 350 to 400?F, which means it can purify water, roast meats, and even steam vegetables.

Solar oven users should keep a food thermometer on hand to check the temperature of the finished products.

Eventually when temperatures inside of the cardboard box get warm enough, it will act as an oven and heat up the marshmallow for the s’more.

Finally, black construction paper is used to absorb sunlight, and increase the overall temperature of the solar oven. This combination of simple engineering makes baking s’mores easy and fun!