Slice the tilapia crosswise into half. Rub salt all over the fish. Let it stand for 10 minutes. Heat 2 tablespoons of cooking oil in a cooking pot or pan. When the oil turns hot, pan-fry each side of the tilapia in medium heat for 5 minutes (my wife likes hers crispy almost burnt). Remove the tilapia and place in a clean plate. Set aside. Meanwhile, (you my need to add 2 tablespoons of cooking oil)
Sauté the garlic, onion, okra and tomatoes Add the miso paste and then pour-in the fish sauce and water.
Let boil. Add the sinigang mix. Stir. Put the fried tilapia in the cooking pot. Cook for 3 minutes. Add the okra. Cook for 2 minutes. Turn the heat off.