In a small saucepan, bring the vinegar to boil and add the sugar slowly until dissolved - stir constantly. Open the cans of beets and retain the juice from one can. Add the beets (whole) to the boiling vinegar/sugar solution and bring back to a boil. Add the retained beet juice (about 1/4 cup worth). Add salt & pepper. Boil for about 2 minutes and then remove from heat. Sterilize two sealing jars (about 10 ~ 12 oz capacity). Put beets into sterlized jars, cover with the vinegar/sugar solution and seal with lids. Let stand several days before serving. This is a sweet pickle best served cold. Excellent with beef and pork.