Around here they call it lutefisk. Check out this link: http://www.foodsafety.gov/~frf/gadmacro.html
I remember catching these in Agate Pass and having mom make fish and chips or my neighbor's mom making lutefisk. The cod would come into the bay and spawn in early spring by the old codfish plant. Used to catch them jigging herring or a huge jig close to bottom. Yea sur you bettcha!