Remove stems from greens. Wash leaves; pat dry. Coarsely chop leaves to measure 8 cups; set aside.
In a Dutch oven or stockpot combine water, onion, sweet pepper, salt, pepper, and turkey leg or pork hock. Bring to boiling. Add greens; cover and reduce heat. Simmer about 1-1/4 hours or until greens are tender. Remove from heat; set aside and keep warm.
Remove turkey or pork from bone. Shred meat with two forks and return to greens. Discard bone. With a slotted spoon, transfer to a serving bowl. Makes 6 to 8 side-dish servings.