Rather than discard the beet greens and skins, Peter Berley shows us in "Genius Recipes" how to use the whole beet plan for a digestive win!
*Note: Consider using rubber glovese to trip beet roots. Cut beets into 4-6 wedges; cut off beet greens and chop.
In a heavy pan wide enough to hold the vegetables in a snug layer, combine the onion, beet roots (and fennel, if using), vinegar, butter, tarragon, and 1/2 teaspoon of salt. Pour in enough water to just cover the vegetables and bring to a boil over high heat.Reduce the heat to low and simmer, covered for 25 minutes, or until beets are nearly (but not quite) tender. Raise the heat and boil, uncovered until the liquid has reduced to a syrup and beets are fork-tender.Add the beet greens, reduce the heat and simmer, covered, for 5 minutes. Uncover and turn the greens over so they mix with the roots and onions. Simmer for 2 minutes more and serve, mixing in optional feta.