A few years ago a friend showed up at a gathering with a frozen lemonade pie that had traveled quite a long distance and was still frozen solid. “How?” was asked and the reply was “My Wonder Box”. That was my first introduction to the Wonder Box Cooker/Cooler. It was designed for the people in Africa who do not have enough fuel to cook their food. Once a dish is hot, it can be moved to the Wonder Box and about 4 hours later, with no additional fuel expended, the meal is cooked. It also works to keep cold things cold, and warm things warm. Think how useful this would be if there was no electricity for an extended length of time. Just use your BBQ grill to heat up the pot of food for 10 to 15 minutes and then stick it in the Wonder Box to finish the cooking. The box holds the heat in to the pot using it to cook the food instead of the heat escaping into the air, and then having to use more energy to create more heat to cook the food. Here is how to make your own Wonder Box Cooker.