Wash about eight cups of torn turnip greens and slow boil the greens for about two hours in a large pot filled with eight cups of water and 1 tablespoon of salt. At the same time, in a smaller saucepan, slow boil 1 large, peeled and diced turnip root in three cups of water, two tablespoons of butter, a teaspoon of salt and a teaspoon of pepper. Add more water to both pots during the cooking process, if necessary. Next, combine the cooked root to the large pot of cooked turnip greens. Add 1 teaspoon crushed red pepper and stir. Serve with white cider vinegar or hot pepper sauce.