'www.youtube.com/embed/mO1B_2bRocE' When actors Kim Rye-ha and Ryu Hyun-kyung embarked on a visit to Hongseong, South Korea, their culinary adventure led them to a highly recommended local eatery specializing in a beloved Korean BBQ staple: Naengsam. Naengsam, or frozen pork belly, might sound simple, but this…