Is it safe or advisable to can fish which has been frozen for a number of months (it was frozen while fresh, and has never been thawed)?
Fish that has been frozen can be canned. The information I read said to keep the fish frozen until ready to can. I believe the only issue with your fish is that it could have freezer burn and that may affect the quality or taste of the canned fish, providing you first froze it in a safe method.
Here is information about proper freezing of fish: http://www.uga.edu/nchfp/how/freeze/fish.html
Information about canning fish can be found at: http://www.uga.edu/nchfp/how/can_05/fish.html
Source: National Center for Home Food Preservation, http://www.uga.edu/nchfp/
Answered by Jessica Kovarik, RD, LD, Extension Associate, College of Human Environmental Sciences, University of Missouri Extension
Last update: Friday, February 06, 2009