You can freeze the raw mix for a couple of months. No problem. You can shape it and freeze or freeze in bulk, like in sturdy plastic containers. Which ever way you decide, wrap well in plastic wrap. It will hold much better or you can use Freezer Ziplocs.

Comment:
Q: My fish is already cooked. It turned out so well this time but we had fewer guests than usual. I hate to throw it down the sink!

Can I freeze the already cooked gefilte fish balls? If so, what would be the best way?
Thank you!

A: Just wrap well in plastic wrap and then put into Ziplock bags.