In terms of seafood, I used lobster, shrimp, mussels, clams, scallops and cod. Crab legs are traditional but not always available so I used lobster. It is also traditional to use white fish fillets, like halibut or cod. I used cod because I splurged on lobster and cod is less expensive than halibut, which is not always available anyway. Shrimp, mussels and clams are usually in Cioppino and scallops sometimes, too. This is a lot of seafood.