Saba no Misoni

• 8 mackerel fillets – or 4, if they are large
• 350 ml (12 fl oz)

Place the mackerel fillets in a large frying pan in a single layer. Add all the other ingredients except the miso and bring to the boil. Reduce the heat to medium and cook for 6 minutes, spooning the sauce over the mackerel from time to time and skimming as needed. Scoop 4 spoonfuls of the sauce int