Ingredients

• 4 scallions, white and green parts separated and sliced.
• 2 tbsp ginger, pealed and grated with micro-plane grater
• 2 tbsp rice vinegar
• 2 tbsp vegetable oil
• 1/4 tsp red-pepper flakes
• 1 tsp sugar
• 4 skinless cod fillets (about 6oz each)