In a heavy-based pan over moderate heat seal the beef shin in the olive oil. Once browned remove and set aside, tip in the onions, carrots, celery, garlic cloves, thyme, orange zest and sauté for a few moments add back the beef shin along with the red wine, olives and tomato passata. Cover with parchment paper or a tight fitting lead and set to cook on medium low heat for 3 1/2 hours or till meat is tender and falling away from the bone. Allow to cool before shredding the meat, remove any bones. Place meat and sauce back over the heat and reduce by 1/3 to a half till sauce is slightly thicker in consistency. Add in the cooked pasta to heat through, remove from heat before adding in the creme fresh, Parmesan, rocket and finely chopped parsley. Serve immediately