This recipe makes a wonderful summer main course, but you can also use smaller tomatoes and serve it as an appetizer. For large gatherings, use it as an accompaniment; for example, with the Orange-Jalapeno Beef Back Ribs. The recipe can be prepared a day in advance and stuffed into the tomatoes just before serving. It is best when served slightly chilled or at room temperature. Other attractive garnishes to consider for the salad are sliced radishes, cucumbers, or red onions. Substitute minced leftover steak for the ground beef if you wish.