Nonetheless, here's a revised version. I'll let you know again when I try this version.
1 whole fish head (maya-maya), cut into 2 (about 1 kilo)
2 tbsp oil
5 garlic cloves, crushed
1-1/2 native onions, finely chopped
1 tbsp crushed ginger
1 tbsp turmeric powder
1-1/2 cups gata (coconut milk)
1 green chili, seeds removed and cut in half lengthwise
1 tsp salt
1 tbsp sugar
1/2 tamarind cube
1/2 cup hot water
1/3 cup curry powder
1 tsp chili powder
1 tbsp lemon juice
1 stalk lemon grass, finely chopped (use the stalk, discard the leaves)
3 tomatoes, quartered
Steam the fish head until barely cooked. Set aside.
Mix 1/2 tamarind cube with 1/2 cup hot water. Add curry powder and chili powder, and mix to form a paste. Set aside.
In 2 tbsp oil, stir-fry the garlic, onions, ginger, turmeric powder until fragrant. Add curry-tamarind paste and stir-fry until cooked. Put in 1/2 the coconut milk and bring to a boil. Add the other half of the coconut milk, okra, chili, tomatoes, salt and sugar. Bring to a boil then add steamed fish head and simmer gently for about 5 minutes.