Steamed Salmon Salad with Grapefruit-Ginger Dressing

1 lb salmon fillet, cut in half (to fit in a steamer basket)

1 tsp ground cumin

Juice from 2 limes (about 1/4 cup)

8 cups mixed baby greens

1 avocado , thinly sliced

1 pink grapefruit , pith and peel removed, segments separated

1/2 cup bean sprouts, thoroughly washed Grapefruit-Ginger Dressing

5 tbsp grapefruit juice

2 tbsp olive oil

1/4 cup white- wine vinegar

1 tbsp chopped fresh ginger