Alaska pollock
Some varieties use seafood as casing. "Ojingeo-sundae" (), made with fresh squid, is a local specialty of Gangwon, while "mareun-ojingeo-sundae" () made with dried squid is eaten in Gangwon as well as Gyeonggi. "Myeongtae-sundae" (), made with Alaska pollock is a local specialty of Gangwon and Hamgyong. "Eogyo-sundae" () is made with the swim bladder of brown croakers.