There are two main heating methods for tin cartons of takeaway grilled fish:

1. Direct heating: put the tin cartons in hot water, and be careful not to use the microwave oven to heat them, because the microwave oven cannot penetrate the metal. When heating, make sure that the water does not overflow to avoid scalding. After heating, take out the tin box, open the lid, put the grilled fish in the pot, add the right amount of oil, then add the side dishes and seasonings, and stir well.

2. steamer heating: put the tin box into the steamer, add a proper amount of water, then cover it and heat it for 5-1 minutes. After heating, take out the tin box, open the lid, put the grilled fish in the pot, add the right amount of oil, then add the side dishes and seasonings, and stir well.