This may not be the way you would want to cook all your meals, but in an emergency that comes with a power outage, you would do well to be familiar with this method of cooking.
It is possible to take a flexible car sunshade (yes, the kind that fits inside your windshield and protects your car from the sun) and cook almost any kind of food. This, of course, depends on the cooperation of the sun.
The trick is to use a black pot and enclose it in a turkey cooking bag to hold in the heat. Not quite as efficient as a regular solar cooker / oven, but it will certainly do the trick.
Want the complete details for this project and more projects of a similar type? You could also pick up a discounted copy of the Sharon Cornet’s book Passive Solar Energy House Projects.
…or pick up an actual solar cooker or a carshade!