This recipe assumes you have cooked bluefish, preferably smoked bluefish. You can find smoked bluefish in most Northeastern markets. Or you can make your own. Or you can just cook up some bluefish -- on the grill is best -- and then use the cooked, flaked meat. No bluefish near you? Try these fish as substitutes: Mackerel (of any kind), shad, herring, sardines, freshwater sheepshead (drum), whitefish, cisco, wahoo, dorado or jack. Basically you want a pretty oil fish that isn't salmon.
Once made, this pate will keep in the fridge for a week to 10 days. It doesn't freeze well, so my advice if you smoke your own bluefish is to seal it into 1/2 pound portions so you can make this whenever.