- Precooking by Baking. Cut off tops and roots. You can put beets of any size together in the oven (conventional or microwave). They're all cooked when the biggest one is done. Then pour cold water over the hot, roasted beets, and you'll be able to slip off their skins. Dump the water.
- Precooking by Boiling. Remove the entire beet top except for the closest 1-2 inches of stem. Leave the roots on; that keeps them from "bleeding" (losing nutrients). Sort beets according to size, and boil similar sizes together so they'll get done at about the same time. When fork-tender (in about 30 minutes), move them into cold water. Slip off skins, stems, and roots.
- Cutting Up. You cut up beets to improve and even out heat penetration in your jar. If baby beets are smaller than 2 inches wide, they can be left whole. If they're larger, cut them into 1⁄2 - inch cubes. Or slice 1⁄2 inch thick, and then quarter the slices.
- Packing and Processing. Pack beets into hot jars. Cover with boiling water, leaving 1⁄2 inch headspace. Optional: Add 1⁄2 t. salt/pt., 1 t. salt/qt.; add 1 T. vinegar/pt., 2 T./qt. to preserve color. Process in a pressure canner only: pints for 30 minutes, quarts for 35 minutes. If using a weighted-gauge canner, set at 10 lb. pressure at 0-1,000 feet above sea level; set at 15 lb. at higher altitudes. If using a dial-gauge canner, set at 11 lb. pressure at 0-2,000 feet above sea level; 12 lb. at 2,001-4,000 feet; 13 lb. at 4,001-6,000 feet; 14 lb. at 6,001-8,000 feet; or 15 lb. above 8,000 feet.
NOTE: Fresh garden beets have more color than most digestive systems can absorb, so your resulting bowel movement may appear to have “blood” in it. That’s just beet color. Eating beets is absolutely not harmful — on the contrary, beets are very nourishing. And they’re not harsh to digest, only startling to view in that manner.