"In the depression when times called for conserving and stretching a budget, people came up with ways to save on cooking fuel costs. By using an insulated hay box they were able to cut down on the cost of cooking and baking foods. Food was brought up to a boil or to a certain temperature and then placed into the hay box. The hay box was usually a wooden box and had lots of hay stuffed on all sides of the enclosed pan that maintained the temperature. This process of cooking worked to allow the food to retain the heat by using insulation.
Today there is even a better option to the hay box. The Wonder Oven
uses two insulated cushions inside a plastic tub. The cushions are
filled with polystyrene beads that are great at maintaining a constant
temperature. This is how you can keep things hot or keep things cold."
Instructions (How to Make)
Instructions (How to Use) + Recipes