I discover this dish when I was at my friends house. We had a get together and she cook this one. She cooked many different food but this one in particular is my most favorite. So I asked her what she did. First, she told me she bought the fish at Costco. She clean the fish and bake it for 45 minutes for 350F. You know it is done because the meat is flaky. When it is done take it out from the oven. While baking the fish prepare a pan, saute onions, garlic, ginger, bokchoy and bell pepper when it is done put it to the fish dish. Then put back the fish into the oven while it is hot covered the dish in foil. When you are ready to eat you can take it out oh by the way do not forget to season it with salt and pepper. Eat hot!