Painting your cookware
There are lots of choices of cookware - glass, aluminum, stainless, cast iron. But to get the best performance you need black - dull black, on the outside surface. Customers report using "high heat" BBQ paint to darken their cookware. This is not neccessary I use the 99 cent stuff I find at WalMart. Flat black, inexpensive, and most importantly "non toxic when dry" Regardless of the paint you use, let it cure in the solar cooker for a couple of days - until all the paint odor