Solar cooker

So far, I think my solar cooker it pretty good. It reflects the light to the right spot and it works well. Type of my solar cooker is box cooker. The reason why I made my solar cooker to box cooker is it is easier to build. My solar cooker has four wing kinds of thing covered with aluminum foil that reflects the light. Inside of box is all covered with foil. We are using black-painted glass bottle because black observed the heat. This solar cooker is for developing country so it has to be easy to make.