Here is an interesting concept, a cooker which makes use of zeolite materials to possibly offer a new environmental friendly way of steaming your food.
The said zeolite materials are things which release large amounts of steam from water which it had recently absorbed, an interesting science to look into.
Apparently the zeolite materials undergoes a process of initially absorbing water and emit heat. The whole process is somehow reversed afterwards when heated once more, something attributed to the release of stored heat. The strange thing about it is that the said mineral does not actually feel warm at all.
By using zeolites the designers of Aura aim to eliminate pollution caused by using coal or wood in picnic areas and promote healthy eating. Zeolite minerals can be charged while something is being baked in the oven without any extra energy used.