Mackerel with colcannon

Paul the fish had some lovely mackerel, and it is very cold ... we needed mash.  Supercharged it with cabbage to get some veg into the veg dodger.  Delicious.

Potatoes
Cabbage
Tomatoes
Olive oil
Butter
Mackerel
Garlic
Lemon

1.  Drizzle tomatoes with olive oil, sprinkle on salt and roast in the oven.
2.  Boil potatoes, steam shredded cabbage above them.
3.  When the potatoes are done mash them, add butter to taste and stir in the cabbage.
4.  Marinade the fish briefly in olive oil, lemon juice and crushed garlic.  Fry on each side for a couple of minutes.
5.  Serve, scoff