When I do dinner parties in the summer, I feel like guests are more conscious about what they’re eating. People really appreciate it when you have healthy options. I like getting a large piece of fish from the Wainscott Seafood Shop—roast it in the oven and top it with a chopped tomato relish straight out of the oven. It has a dramatic presentation and it’s healthy! I’ll also serve farro or quinoa salad and a big green salad.356 Montauk Highway, Wainscott, theseafoodshop.com.