Mackerel is a tasty ... Transfer the tomato mixture to a saucepan, place over a medium heat and cook for 6 minutes, stirring frequently, until the sauce is slightly reduced. Set aside.

Mackerel and sardines are both oily fish packed ... in a pan with tomatoes, chopped olives, and tomato sauce for a rich, ...

This time, the sauce is used to simmer the in-season mackerel. By adding the concentrated form of the oyster’s umami to the familiar combination of soy sauce, sake and sugar, we get a flavor ...