or simply pan-fry the fillets and serve with a refreshing mint and mustard vinaigrette. Avoid heavy, cream-based sauces - the richness of mackerel is enough of a stomach filler as it is.

1. Place the mackerel fillets into the cucumber and summer cup brine for 30 minutes. 2. Then drain the fillets. 3. Cut them down the middle so you have 8 belly fillets and 8 ‘royal’ fillets.

Drizzle more olive oil over the top and season with salt and pepper. Place the cleaned mackerel fillets on top and add a ...