Hoppin' John Salad with Molasses Dressing

1/4 cup appe cider vinegar
1/4 cup mild-flavored (light) molasses
1/4 cup olive oil
1/4 teaspoon cayenne pepper
1 (1-pound) bag frozen black-eyed peas
1 1/2 cups 1/2-inch cubes peeled yam (red-skinned sweet potato)
2 cups 1/2-inch andouille sausage (about 12 ounces)
1 1/2 cups frozen sliced okra, thawed, patted dry
1 cup chopped red onion

Whisk first 4 ingredients in small bowl to blend; season with salt and pepper.

Cook black-eyed peas and yam in large saucepan of boiling salted water until tender, about 8 minutes. Drain; cool. Place in large bowl. Add andouille, okra, and onion. Add enough dressing to coat and toss.