I use high temperature spray paint that you can purchase at any automotive parts store like Autozone. It’s good up to 2200 degrees Fahrenheit and has held up great. The 5 foot diameter parabolic produces temperatures up to 825 degrees Fahrenheit.
you can purchase one with a small electric motor that will automatically track the sun all day. The focal point stays on the cooking vessel for approximately 30 to 45 minutes contingent upon the diameter of the cooking vessel. Pressure cookers work great with this type of solar cooker.
would be interesting to find a list of foods that can cook to completion without having to adjust the satellite dish to follow the sun. Obviously the pressure cooker idea cooks things much faster then regular cooking so the question is what all can be cooked in the time that the sun passes through the focal point with no adjusting or fussing. Do you have any ideas ?
Try doing ribs this way *without* adding liquid to the cooker. Instead, add apple or some other wood chips to the bottom where the heat is highest (*NOT* hickory or mesquite, because they are too strong).
The moisture from the ribs will circulate inside, keeping them moist without that boiled taste/consistancy.
You can use a satellite dish if it is large enough. I think you would need at least a 5 foot diameter dish. I tried a smaller parabolic, called the Solar Sizzler and it was not powerful enough to run a pressure cooker. You can use mirror vinyl for your reflective material. It’s fairly easy to apply and not to expensive. I always stand behind or off to the side of the parabolic for safety reasons, so shadows are not an issue.