1. Wash the fish first and sprinkle freshly ground black pepper and sea salt on the surface and inside.
2. Press garlic into mud and rub it on the fish body and inside.
3. Stuff lemon slices, rosemary and fragrant leaves into the belly and surface of the fish, and pour more olive oil on it.
4. Wrap the whole fish in tin foil.
5. Put the fish wrapped in tin foil into the steaming oven, turn on the hot air barbecue function without preheating, and set it at 200 degrees for 45 minutes. (Grilled fish needs to pay attention to the heat. Everyone's oven is different, the temperature and time are slightly different, please adjust it yourself. )
6. Take out the fish after roasting, open the tin foil, sprinkle with green pepper powder, and serve. (? If you can't eat spicy food, the green pepper before serving can be omitted and replaced with shallots. )