Man on the street Doc Willoughby visits Joanne Chang at Myers + Chang to learn about shell-on shrimp. Then, test cook Becky Hays shows host Christopher Kimball how to make the best crispy salt and pepper shrimp at home. Next, tasting expert Jack Bishop challenges Chris to a tasting of Sichuan peppercorns. Finally, test cook Julia Collin Davison reveals the secrets to making Vietnamese-style caramel chicken with broccoli.