- How long does frozen flounder last? The precise answer to that question depends to a large extent on storage conditions - keep flounder frozen at all times.
Properly stored, frozen flounder will maintain best quality for about 12 months in the freezer, although it will usually remain safe to eat after that.
Is frozen flounder safe to eat after the expiration date on the package? Yes, if properly stored - commercially frozen flounder will typically carry a “Best By," "Best if Used By," “Best Before”, or "Best When Used By" date but this is not a safety date, it is the manufacturer's estimate of how long the frozen flounder will remain at peak quality.
How long will frozen flounder remain safe to eat? Frozen flounder that has been kept constantly frozen at 0°F will keep safe indefinitely, as long as it has been stored properly and the package is not damaged.
How to tell if frozen flounder is no longer good? If dry spots or discoloration have developed on the frozen flounder, freezer burn has begun to set in - this will not make the flounder unsafe to eat, but it will harm the texture and taste.
Sources: For details about data sources used for food storage information, please click here