Shabu20 Busan Jeonggwan is a shabu-shabu restaurant in Jeonggwan, Busan, where beef and pork are served without limit. Diners choose from five broths, including katsuobushi and mala huoguo, and use a vegetable garden and sauce bar. It runs as a buffet with a 100-minute time limit, and dakgangjeong is also unlimited. The selection of sides and buffet dishes is small.