South Beach is known as sushi central, and it is arguably true that a greater concentration of very good Japanese restaurants can be found on any square mile of Beach than anywhere in the U.S.A. Still, visiting Japanese chefs, local Asian foodies, and others in the know head west to this small spot in a fairly downscale shopping mall for Miami's most authentic Japanese fare -- especially Matsuri's daily specials, dishes rarely found elsewhere like foie graslike (and nonfishy) monkfish liver in spicy broth, or shisamo, succulent salt-broiled smelts stuffed with their own "caviar." And well worth the drive by itself is Matsuri's selection of toro, buttery belly tuna often seen on sushi-bar menus but almost never available: silken chutoro (particularly tasty in negitoro, a steak tartare-esque preparation of chopped toro and scallions, topped with a quail egg), and even more marbled otoro, the ultimate in sushi/sashimi decadence.