TikTok is home to a soy sauce challenge in which men dip a part of their body into the condiment to see if they can taste it in their mouths.

Soy Sauce for Beginners by Kirstin Chen (New Harvest, 256 pp.). The book: What it's about: After her husband cheats on her, an ambivalent Gretchen Lin, 30, leaves San Francisco and returns home to ...