Wash the potatoes thoroughly and cut into 2-3 mm thin slices. Sprinkle with 2 tablespoons of oil, mix and spread on a baking tray lined with baking paper. Sprinkle with some sea salt.
Bake in the preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for approx. 25 minutes. Turn once in between. Wash parsley, shake dry and pluck leaves from the stalks.
Peel and chop the garlic. Finely puree parsley, garlic, 4 tbsp. oil, lemon juice and 4 tbsp. water. Season to taste with salt and pepper. Peel onion and cut into large cubes. Wash the pimientos.
Wash the steaks and pat them dry. Heat 2 tablespoons of oil in a frying pan. Fry the steaks for 2-3 minutes on each side. Season with salt and pepper, remove and wrap in aluminium foil. Fry the pimientos and diced onions in hot frying fat while turning for about 4 minutes.
Dress everything.