Stew chopped chopped onion in the oil until soft, Sprinkle with red pepper and mix with tomato paste. Add the sliced ​​celery and it too stew. Pour some hot water (enough to cover the products) and leave to boil over low heat, then increase the temperature to moderate. When the celery is tender, add the olives and parsley. We remove the dish from the heat and keep in sandwiching court to serving him. Serve with cooked pasta or boiled potatoes, steamed with butter.