
1. Rub salt on fish, just a little salt will do, too much will ruin everything not to mention health issues. Some use a little flour, I don't, so it's up to you; you can try and buzz me for the results. Fry in hot oil. Set aside. Use non-stick frying pans so the fish skin won't peel.
2. In another frying pan, heat oil. Stir fry sliced onions and pounded garlic. When the onion has become transparent and the garlic pieces become brown, add the strips of ginger, green and red peppers and sliced tomatoes. Stir fry.
3. Add pineapple juice, soy sauce and water. If you desire a sweeter sauce, add sugar; again, just a little of sugar. You can also add some pineapple chunks for better presentation. Thicken with a little bit of cornstarch. Simmer for about 3-4 minutes.
4. Now you have the sweet and sour sauce that you can pour over the fish. However, I prefer the fish to be cooked a little bit in the sauce so it could absorb the flavor. To do this, put the fish into the simmering sauce and simmer for another 3-4 minutes.
Serve hot! Enjoy!