Originally posted by Crafty:

All I know so far is that you can use fish on the Cauldron.

The only fish a couple of us caught got lost because I tried to drop them on the ground for someone and they bugged out and couldn't be picked up again.

So whatever you don't don't throw any fish on the ground or you will lose it.

yes the fish not being able to be picked up is a bug and the devs are currently working to fix it (it was adresed a little while ago)

but yes the caldron is how i got to turn my pike into raw fish, thanks man.