Red Fish Fillet

To make red fish fillet, go fishing and catch a fish.

Then go to your inventory and you will be able to drag it to the 'cut' box on the player (similar to equipping new armour). This will then cut the fish into fish fillets.

Lake fishing

 * Trout (insect bait/cut bait)
 * Catfish (insect bait)
 * Carp (cut bait)
 * Koi (cut bait)