Place snow peas in a bowl and cover with boiling hot water. After 2 minutes, strain and shock in an ice bath. When cool, strain. Cut snow peas on the diagonal into 1/2-inch diamond shapes, discarding end pieces.
In a me dium-sized bowl, combine snow peas, scallions and radishes. In a separate bowl, whisk together vinegar and oil. Pour over vegetable mixture and serve.
PER SERVING: Calories: 73; Total Fat: 3.5 grams; Saturated Fat: 0.5 grams; Protein: 2 grams; Total carbohydrates: 9 grams; Sugar: 6 grams; Fiber: 2 grams; Cholesterol: 0 milligrams; Sodium: 152 milligrams