Kumsu Bokguk in Haeundae is the flagship of a chain with branches across Seoul and Busan. For over 50 years and across generations, it has delighted seafood lovers as a specialist in pufferfish. Four varieties are offered: brown-backed puffer, prized for its chewy texture; globe puffer, often prepared in spicy stew; yellowfin puffer, sweet and suited to steaming or boiling; and ocellate puffer, the largest type, firm enough to serve raw. With dozens of licenced chefs, safety is paramount, making Kumsu Bokguk a trusted destination for pufferfish.