Cut a thick lengthways slice from one side of the pineapple. Using a small, sharp knife, hollow out the pineapple and dice the flesh. You will need 65g (2½oz) diced pineapple for this recipe, so save the rest to eat later. Heat the oil and butter in wok, add the garlic and stir-fry until it starts to turn golden brown, then add the seafood. Cook for 2 minutes or until done, then add the soy sauce, fish sauce, sugar and turmeric and stir-fry for a further minute. Add the red and green pepper, onion and diced pineapple and stir-fry for 1 minute. Finally, add the cooked rice, stirring and mixing well. Stir-fry until everything is heated through. Spoon the mixture into the hollowed-out pineapple and serve sprinkled with coriander leaves.