Fish Tartare

Many fish can be served raw as tartare: tuna, albacore, halibut, and salmon, for example. It is exceptionally important to use impeccably fresh fish; be sure to tell your fishmonger that you intend to eat the fish raw. At home, keep the fish chilled over ice at all times. Cut the fish on a clean board with a sharp knife, and put the cut-up fish in a bowl nestled in a larger bowl filled with ice. For an ample appetizer, figure on 1/2 pound of fish for 4 people; you will need more if serving the tartare as a main dish. To cut the fish, first slice it very thin across the grain, removing any fibrous connective tissue. Cut the slices into a thin julienne, and then cut the julienne crosswise into fine dice. The fish can be cut ahead and covered tightly with plastic wrap to keep it from drying out. Stir in the other ingredients just before serving. Serve fish tartare on little croutons or endive leaves, or on a bed of simply dressed greens.