In a Dutch oven, combine the carrots, water, 2 tablespoons butter and ginger. Cover and cook for 10 minutes. Cook, uncovered, until carrots are crisp-tender, 6-8 minutes longer., Stir in the syrup, vinegar, salt and pepper. Cook, stirring frequently, until sauce is thickened, 5-6 minutes. Stir in remaining butter. If desired, garnish with parsley.