Have you ever cooked beetroots in a solar oven? It’s the simplest possible. You simply put your beetroots, peel and all, in a black pan and place them in the solar oven, without adding any water.
Then you let the sun do the cooking.
When you take them out, the peel slips off naturally, leaving a soft, well-cooked beetroot full of taste. I love beetroots and know of no better ways of cooking them than in the solar oven, where no taste is lost.