Trim leaves off the beets and scrub the skins thoroughly. Place them in a pot of water. Bring to a boil, then lower heat, cover and simmer for 30-40 minutes (beets should be easily pierced with a fork).
2
Drain beets and rinse with cold water until cool enough to handle. Remove and discard the skins.
3
Dice the beets into bite-sized pieces. Toss with the lemon juice, vinegar, sesame seeds, scallions and sugar. Add salt and pepper to taste.