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.