My friend Joan celebrated her 50th birthday over the weekend, and we all threw a big party for her. As is her style, she made the party about all of us and not just about her, with a toast to us all as remarkable friends in her life. Some mutual friends, Steve and Sallie, decided she shouldn't have to host the thing herself, so they opened up their house to the mob, and I pitched in with some of the food and a few chairs. Two of our nieces and the husband of one of them happened to be visiting from out of town that same evening, and they joined us for a fun evening. Joan chose the menu—appetizers, filet mignon on the grill, potatoes, asparagus, plenty of wine and beer. My job was to provide the vegetables and the appetizer, and I chose to make an antipasti platter. Because we were to be 27 people in all, I made two. I think I've only done this once before, but it appealed to me because there is no cooking, and you can buy all the elements ahead of time. The trick is to make it ...