This is a great salad to make when you need an accompaniment to a mexican dinner, whether it be enchiladas, tacos, or burritos. This salad really is a lovely green salad with onions and peppers, and a simple clean vinaigrette, that goes with a variety of dishes. Vidalias are sweet onions, available april through early september, are sweeter than regular white, yellow or red onions, and while they still have an onion-y flavor its not nearly as sharp. This makes it a nice onion to use in salads when you are introducing onions to kids or to people who think they dont like onions (many people just get nervous that onions will be too strong, but they add so much flavor to dishes, both raw and cooked, that they are a shame to miss out on).