This is a great main-dish salad for summertime. It has lots of contrasts....sweet & sour, soft & crunchy, hot and cold. You can also make this using scallops, chicken or steak instead of the shrimp. The ponzu sauce can be found in the Asian section of well-stocked grocery stores, or in Asian grocery stores. This is a Wolfgang Puck recipe that I found in the Chicago Tribune. We found it serves 2 for a main-dish and 4 if a side.