Heat a non-stick frying pan over a medium-high heat.

Brush a little of the teriyaki sauce mixture over the mackerel and sear the fillets, skin-side down, for 1-2 mins.

Turn the fish over and add the teriyaki sauce mixture to the pan, bring to a bubble and cook the sauce for 1-2 mins more.

The fish will warm through and the sauce will thicken.

3)Spoon the rice into bowls, then top each bowl with a mackerel fillet.

Spoon over the sauce and sprinkle over the spring onions.