Omit the jar of pickled beets. Preheat oven to 350°F. Scrub 8 to 12 ounces of small beets and place in a 2-quart rectangular baking dish. Drizzle with a little olive oil, then sprinkle lightly with salt and pepper. Add 1 to 2 tablespoons water to the dish. Cover; bake for 1 hour or until tender. Cool, peel, and slice. Place in a nonreactive bowl. In a small saucepan heat together 1/2 cup cider vinegar, 1/4 cup water, 1 tablespoon sugar, 2 whole cloves, 1 whole allspice, and 1 1/2 teaspoons salt. Heat and stir over medium heat until sugar and salt dissolve. Pour over beets; cover and chill overnight or up to 1 week.