I think solar cooking is promising. I have tried baking biscuits in my Bear Vault lined with aluminum foil. It sort of worked. The biscuits rose but still were gooey inside. I just make the biscuit dough stiff enough that it does not need a tin. I did this at 12,000 feet so the bear can did not heat up as much as I would have hoped. My Bearikade is black and should absorb a lot of heat, so I am going to try this again when warmer and more sunshine. If it does not bake in an hour or so it is not practical.