Fried blowfish. Northern puffer, actually. Blue Moon Fish had these out, and I love trying all of the random sea creatures they have for sale from time to time. Turns out these things are really good—just quickly fry them in some bread crumbs and serve with whatever sauce you like. There’s a spine going down the middle, but each side peels off easily. The flavor is pretty mild, not fishy like many little fish or gamy like frog legs, which they sort of resemble. I’d recommend giving these a try if you find them available.
