Here is where you can get them...
Filet of Redgill - Booty Bay, Port Authority Bldg. Cost 1.5g
Nightfin soup - Steamwheedle Port, Buy from the fisherman.
I like to cook a lot too... inBC there will be a ream of new cooking recipes...some will give ur pets buffs, like the ones we can get from eating some foods.
BH