Squash the onions, garlic, ginger, curry leaves, chilies, lemon juice, turmeric powder and salt.
Add the tuna, rice, coconut and finally the water and mix into a thick paste-like mixture.
Spread evenly on a non-stick pan and bake at moderate (gas mark 4 / 180˚C / 350 ˚F) heat, until it turns brown (about 45 minutes.
Serving Size 8 - 10 Servings