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This great invention from Sarah Collins is actually a system devised to cook foods slowly without any electricity or fuel required.
All people need to do is heat their food to a boil, place it inside The Wonderbag, seal it and the clever system retains so much heat that whatever is inside continues cooking.
It's perfect for camping and BBQs but the actual reason it was developed was as a way to help reduce energy consumption during cooking in developing nations while helping families conserve on fuel.
The Wonderbags cost $50 and for everyone sold in the U.S. the company donate one to a family in need in Africa.
Here's a video that explains more.