www.youtube.com/embed/e1LHypdlejU Heuksan Dongeo: A Master's Guide to Fermented Skate (Hong-eo) in Seoul - From Beginner to Expert Venturing into the world of Hong-eo (fermented skate) can be daunting, especially for first-timers. But at Heuksan Dongeo (흑산도 넙데기) in Sadang, Seoul, run by…