Filet the fish and cut in thin slices. Put each slice between cling film and smash flat with a big knife. Put away on a cold plate.

Make the vinaigrette of lemon olive oil and the vinegar. Sprinkle over the salads.

Put the slices of the fish on a plate. In the middle you add the salad and sprinkle the fish with some vinaigrette. Finally bring to the taste with salt and pepper. Serve cold.