Preheat oven to 400°F. Line a roasting pan with aluminum foil. Place the beets on the aluminum foil in the pan. Rub olive oil over the beets, and sprinkle with salt. Wrap the aluminum foil over the beets and roast for 1 to 2 hours, depending on the size of the beets and how old they are.
After 1 hour, test every fifteen minutes by poking a beet with the tines of a fork. Once the fork tines go in easily, the beets are tender and cooked. Remove from the oven and allow to cool for 15 minutes.
After the beets have cooled for several minutes, but are still warm to the touch, peel off the outer skins and discard (be careful not to get the juice on your clothes!). Cut the beets into quarters or slivers.
Place beets in a serving bowl. Pour apple cider vinegar, olive oil, and salt, to taste, over the beets. Allow to chill and then serve.
by The Savvy Kitchen