In a small saucepan, bring balsamic vinegar to a boil. Add sugar and cook until syrupy, about 3 minutes. Remove from heat and stir in olive oil. It may appear to separate.
Each contains about 99 calories, 4 g fat, 0 g cholesterol, 30 mg sodium, 15 g carbohydrate, 3 g dietary fiber, 11 g sugars, and 2 g protein.