Lutefisk
Lutefisk is dried whitefish, usually cod, but sometimes ling or burbot, cured in lye. It is made from aged stockfish (air-dried whitefish), or dried and salted cod. The fish takes a gelatinous texture after being rehydrated for days prior to eating. Lutefisk is prepared as a seafood dish of several Nordic countries. It is traditionally part of the Christmas feasts Norwegian julebord, Swedish julbord, and Finnish joulupöytä.
Source: Wikipedia