To trim carrots, leave 1 to 2 inches of stem; it is not necessary to peel them. In a medium saucepan cook carrots, covered, in a small amount of boiling water for 5 minutes. Add sliced leeks; cook about 5 minutes more or until carrots are crisp-tender. Drain and set aside.
For glaze, in the same saucepan combine juice, cornstarch, fresh or ground ginger, salt, and nutmeg. Cook and stir over medium heat until thickened and bubbly. Cook and stir for 1 minute more. Stir in vegetables; heat through. Garnish each serving with a dollop of plain yogurt, if desired. Makes 4 servings.