1
Remove the fish's entrails, wash to clean, then let it air dry. Place the fish on a cutting board, make a vertical cut and stop at 0.5cm deep, then slant the knife to make a horizontal cut and stop at about 1.5 cm deep to make a flap. Repeat this. Cut 3 flaps on each side. This is to allow the fish to be done faster and to absorb flavor fully. (Don't make the cuts too deep, as long as the flaps can be opened, it is fine.)