- 
        Buy the fish
        cleaned, scaled and with the head removed. 
- 
        Wipe out
        cavity with kitchen paper dipped in coarse salt and wash well. 
- 
        Rub inside
        cavity with a little salt and lemon juice. 
- 
        Heat oil and
        gently fry ginger, garlic and chili until soft. 
- 
        Add cumin and
        garam masala and fry for 2-3 minutes. 
- 
        Remove from
        heat, stir into yoghurt and add salt to taste. 
- 
        Dry fish on
        paper towel, make diagonal slits in the flesh on each side and put into
        a greased baking dish. 
- 
        Spread the
        marinade on both sides of the fish and inside the cavity. 
- 
        Leave to
        stand at room temperature for 30 minutes. 
- 
        Then bake in
        a moderate oven 35 minutes or until flesh is white and opaque at the
        thickest portion. 
- 
        Garnish with
        coriander leaves and chili. 
- 
        Serve hot.