Put the pan back on a medium heat and add another lug of olive oil. Add the onions, carrots, celery, bay leaves and rosemary. Cook for 5 minutes with lid askew, stirring occasionally. Stir in the tomato puree, purée then add the beef, stock cherry tomatoes and the beef back to the. Pan stir everything together. welltir everything together well. Place the lid on askew. Bring to the boil, reduce the heat to a simmer and cook for 90 minutes or until the meat is tender stirring occasionally. 30 minutes before the end of cooking, throw in the pearl barley. When it’s ready, season to taste.