Step 1

Cut the cod into bite-sized pieces and dry them well with paper towels.

Step 2

Mix the batter ingredients in a large bowl then add the fish and mix well.

Step 3

Heat the oil in a large frying pan with high sides. When the oil is hot, shallow-fry the fish in batches until it is golden brown and cooked through, about 4 minutes per batch. Remove the cooked fish from the pan and set it aside on a plate lined with paper towels.

Step 4

Drain all but 2 tablespoons of oil from the pan. Add the green onions, garlic, ginger, and sugar and saute for about 1 minute.

Step 5

Return the fish to the pan, sprinkle the rice vinegar over the top, and toss gently.