Heat the remaining oil in a frying pan, and gently fry 2 finely sliced onions (red or white ... Step Reduce the heat, and spread the mixture of chilli paste and onions on top of each tuna steak.
Add capsicum, a pinch of salt, and black pepper. Then, add red chilli sauce, ketchup, vinegar, honey, and soy sauce. Mix well. Cook for a few seconds, then add a cornstarch slurry to thicken the sauce ...