I use this recipe now. Cooking the fish separately solved a problem i always had with it flaking and getting lost in the mix. I vary the seafood to what I get/have/feel like at the time, but typically use mussels instead of clams
We use mussels and clams but cook them separately then add them when served. The shell seem to complicate the serving. Thought we used cod for the fish which seemed to hold but yea good idea to cook separately as well.