Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4                    tuna steaks - -- (5 oz ea)
   2      tablespoons   olive oil
                        salt -- to taste
                        freshly-ground black pepper -- to taste
   1      small         red onion -- sliced into rings,
                        -- and grilled
     1/3  cup           avocado vinaigrette -- see * note
                        mesclun or young lettuce
   4      slices        ripe tomato

Preparation:

* Note: See the "Avocado Vinaigrette" recipe which is included in this collection. Prepare a wood or charcoal fire and let it burn down to embers. Brush the tuna steaks with the olive oil and season with salt and pepper. Grill for 2 minutes on each side for rare steaks. For each sandwich, layer tuna steaks, mesclun, tomatoes, red onion and avocado vinaigrette. Serve immediately.