Choi Gane Shabu Mushroom Kalguksu Seongsu Direct Branch in Seongsu, Seoul serves shabu-shabu and mushroom kalguksu together. The mushroom broth is rich and pairs well with beef. The meal follows a set order: after the shabu-shabu, kalguksu is served next. It ends with fried rice cooked until the bottom turns crisp and browned.