Carambola broccoli salad

4 cups broccoli florets, steamed til crisp-tender and cooled
 1 cup thinly sliced carambola
 1/2 cup golden raisins
 1/2 cup red onion rings
 1/4 cup sliced water chestnuts
 1/4 cup nonfat plain yogurt
 1/4 cup (fat free) mayo
 1 teaspoon (or to taste) freshly squeezed lime juice
 Combine first five ingredients and toss gently.  Blend yogurt, mayo, and lime
 juice in a small bowl and stir into salad.  Cover and chill thoroughly before
 serving.