Hi Grannyjanny, I always cook my betroot in the oven (if it;s on for something else) or the slow cooker, it works a treat doesn't boil them to death and is easy on the electric bill.Though one old guy was boiling his down the lottie in an old pan over ametal grill burning recycled wood doesn't get more economical than that :)
p.s i sometime wrap them individually in foil,1'2 inch water in a lidded dish