Lemon porterhouse steaks with spicy mash

In a pan, heat the oil over medium heat. Cook the garlic and chillies until the garlic just begins to colour. Whisk in the mashed potato with a fork, adding the lemon juice and coriander. Add salt and pepper to taste and set aside in a warm place.
Rub olive oil on to the meat, enough to make it shiny and slightly slippery all over. Coarsely grind a little black pepper over the steaks.
Cook the meat for 3 minutes on each side, a little less if you like it rare. Put the steaks on warm plates. Squeeze a quarter of lemon over each steak and sprinkle with a little sea salt. Serve immediately with the spicy mash. Serves 4.