UNION SQUARE CAFE'S MARINATED FILET MIGNON OF TUNA

Steps:

• Combine all the marinade ingredients in a bowl and place the tuna steaks in it. Refrigerate for 3 hours, turning the tuna every hour.
• About half an hour before cooking, remove the tuna from the marinade to a plate, and let it reach room temperature. Preheat a grill, barbecue or pan to very hot.
• Brush the tuna steaks with olive oil. Grill for 1 to 2 minutes on each side. The outside should be well seared, and the center should be just warm and very rare.
• Garnish each tuna steak with pickled ginger, and serve.