Step 1

Take the frozen mackerel fillet out of package and soak in the rice starch water for 20 minutes to thaw.

Step 2

Meanwhile make the sauce by mixing all the ingredients.

Step 3

Take the fillets out of starch water and pat with paper towel to dry. Coat with corn starch lightly on both sides.

Step 4

Heat oil in the nonstick surface skillet over medium heat. Sear the fillet, the skin side first, for 3-4 minutes. Flip and sear the other side for 3-4 minutes as well.

Step 5

Reduce the heat to low, and turn the fillet again so the meaty side is facing you. Spread the sauce over the fillets all around, about 1 Tbsp per fillet. Cover with lid and simmer for 5 minutes so the sauce can set on the fillets.

Step 6

Place fillets over onions on the platter and serve warm with rice. Enjoy!