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Feasible Solar Heat Retention Cooking - Tips

Heat Retention Cooking

I found this one link showing how to make a Heat Retention Type cooking box with Banana leaves and about any other type of leaves.

Amazing how few solar projects are rediculously complicated and totally not feasilbe for a person who earns 1 dollar per day to make.

This one is feasible, and IF they cooked BEAN, then a good idea, as beans are very hard and take a long time to soften up.