Collard Greens

2 pounds collard greens
1 ham hock or 6 slices cooked bacon
1 medium onion, sliced or chopped
1 teaspoon crushed red pepper
2 to 3 teaspoons Kosher salt

Clean and wash greens well; remove tough stems and ribs. Cut them up and place in a deep pot; add onion. Wash off ham hock and add to the pot. Add red pepper and salt. Add enough water to cover greens and cook until tender, about 1 hour.