This recipe comes from "Marcella's Italian Kitchen" by Marcella Hazan. I have made it several times with good results. The shellfish or fish that you choose can vary; it is the method that is important. Other seafood that could be added include clams and one cup of clam juice, mussels, scallops, monkfish, etc. It needs to be made with an Arborio-type of rice (Carnaroli, Roma, etc.). I think it is more intriguing served in the Italian style -- as a first course in smallish portions.