Gomtang Lab, newly reopened on the 10th floor of Hyundai Department Store, is Chef Lim Jeong-sik’s dedicated space for exploring gomtang and other broth-based dishes. The signature Collagen Gomtang is simmered for over 10 hours with beef bones, tendons, shank, and tail, resulting in a rich, gelatinous depth of flavor. The menu is broad, ranging from tripe gomtang and clam gomtang to Pyongyang-style cold noodles and beef ramen. Ordering the set brings an array of sides—such as tofu with pollack roe, kimchi pancakes, and dumplings—while the slow-cooked beef pairs well with traditional Korean liquors. Lines can be long, so visiting at opening time is recommended.