Melt butter in heavy large pot over medium heat. Add carrots and sauté 5 minutes. Cover and cook until carrots are crisp-tender, stirring occasionally, about 7 minutes. Stir in sugar and vinegar. Cook uncovered until carrots are tender and glazed, stirring frequently, about 12 minutes longer. Season to taste with salt and pepper. Add chives and toss to blend. Transfer to bowl and serve. Makes 10 servings. Bon Appétit December 2000