In addition to beans, this salad features corn, peas, and red onion. The dressing is a tangy and mildly spicy vinaigrette. This is a colorful, hearty salad, perfect for any of the three P's: potlucks, parties, and picnics!   4-Bean Salad Prep time: 25 mins Cook time: 15 mins Total time: 40 mins Serves: 8