Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  10                    cherry tomatoes
   1                    red pepper
   1                    green chili -- (or to taste)
   1                    ripe -- firm avocado
                        olive oil
                        salt and pepper
   4                    tuna steaks -- cut from the
                        - belly
   2      tablespoons   chopped chives
   1      tablespoon    coriander leaves
   2                    lemons or limes

Preparation:

Roughly chop the tomatoes, pepper and chili and place in a bowl. Cut the avocado in half and, with your hand wrapped in a tea towel for protection, hold the half with the stone in it. Lightly tap the stone with a sharp knife so that the blade lodges in the stone. Twist the knife and the stone should come away easily. Slice the flesh from both halves into chunks and add to the chopped ingredients. Pour over a generous amount of olive oil, season with salt and pepper and set aside. Grill the tuna steaks for two minutes on each side, or longer if you don't want them too underdone. Remember that the fish will continue cooking a little even when you remove it from the heat. Season with salt and pepper on both sides and allow to rest in a warm oven. To serve, divide the salsa equally on four plates, place the tuna steaks on top, sprinkle with the chives and coriander and serve with half a lemon or lime. Source: Hugo Arnold, Evening Standard, Londo