Ingredients

• 2 mackerel, cleaned and cut into pieces (450 g after trimming)
• 1 tablespoon salt
• 450 g sweet potato
• 1 onion (200 g)
• 30 g scallions
• 2 green chilies
• a little sesame seeds
• 2 tablespoons soy sauce
• 2 tablespoons sugar
• 2 tablespoons rice wine
• 1/2 teaspoon minced ginger
• 2 tablespoons corn syrup
• 1 tablespoon sesame oil
• 1/2 cup water

Instructions

1. Clean the mackerel, remove the head, tail, and fins, take out the innards, wash well, drain, cut into 5 cm pieces, and sprinkle with salt.
2. Slice the sweet potato into 0.6 cm pieces and the onion into 2.5 cm-wide pieces.
3. Cut the scallions and green chilies into 5 cm lengths.
4. Mix the soy sauce with the remaining seasoning ingredients to make the braising sauce.
5. Place the sweet potato and onion in a pot, arrange the mackerel on top, pour over the sauce, and bring to a boil.
6. When it starts boiling, reduce to medium heat, add the green chilies and scallions, and simmer while spooning the sauce over the fish until the sauce becomes thick.
7. Transfer the fish to a serving plate, spoon over the reduced sauce, and sprinkle with sesame seeds.