Re-posted -
Lots of folks think bluefish are barely edible, but they are fit for a king when cooked the day they are caught, full of rich juicy fishy goodness. Mix in a bowl: mayonnaise, lots of chopped fresh ginger, some soy sauce, some salt and pepper, and chopped scallions. Coat both sides of the bluefish filets, then throw on the grill.
The secret to cooking many fish on the grill is to put a layer of aluminum foil on top of the grill, then cut a bunch of slits in the foil with a knife - it allows you to turn it without crumbling. Don't overcook - just 'til it flakes. Sprinkle with more chopped scallions when done on the flesh side, and serve with potato salad and green salad, crusty bread, martinis and champagne, and go to sleep happy, fulfilled, and thankful for God's bounty.
I've been using this recipe ever since I found it in John Hersey's 1987 bestseller "Blues" - a very fine and delightful book about fishing on the Islands - and about Life, of course. They might have it in that good bookstore on the main drag in Nantucket, but I'd be surprised. Anyway, they should.
The Bluefish is the favorite fast-food snack of the giant 500-1500 lb. Bluefin Tuna - a fish which I find inedibly dry and dull except as sushi. However, if you can find "toro" - the fatty belly meat of the Bluefin, which only can be found where Bluefin are regularly caught in Montauk, Cape Cod, and the Islands, season it with salt and pepper and throw that on the grill and it beats the best Kansas steak by a mile.
Ask your fish store up there to save you some. Be careful and use low coals, because it will flame up and burn far more than a steak. The Japanese pay through the nose for it, which is why we can't find toro at our local fishmongers. They ice it and put it on a plane to Japan, and probably eat it raw, which is a shame and a waste because good Yankee smoke and flame reveal its deeper character. Indeed, as with people.
A tip from a reader - you can do swordfish belly meat too - never tried it but it makes good sense.