Scrub, peel & cut beets into quarters. Cook in boiling water until tender, about 45 minutes. Place beets in a food processor & puree. In a large bowl, combine 1 c beet puree with remaining ingredients to form a dough. Turn dough out onto a floured board & knead until smooth & pliable. Place dough in a bowl, cover with plastic wrap & let rest for at least 30 minutes. Shape & cook dough as desired.