This 'Forever Soup' Has Been Simmering for 52 Years

In Bangkok, one family's most prized heirloom doesn't sit in a safe—it bubbles in a concrete-walled pot. The Wall Street Journal 's Shan Li profiles Wattana Panich, a third-generation beef noodle shop built around a "mother stock" that has been continuously simmered, tended, cooled, and revived since 1974. Current...