Ingredients:
* 1 piece sirloin or porterhouse steak, about 1 kg (2 lb)
* 6 tablespoons olive oil
* 1 tablespoon chopped oregano
* 1 large garlic clove, crushed
* salt and pepper
Sauce:
* 2 tablespoons olive oil
* 1 small onion, finely chopped
* 750 g (1 1/2 lb) tomatoes, skinned, deseeded and chopped
* 6 tablespoons chopped oregano
* 2 garlic cloves, crushed
* 6 tablespoons full-bodied red wine