Bocconcini was impossible to find in our area, so I subbed in Aged Mozzarella. This sauce is very dense and good. The only thing I would really change is to sauté the carrots and celery with the onions and garlic instead of just adding them directly to the sauce. The veggies were a little bit too crunchy still at the end of the 30 minute simmering time. Thank you for a recipe pretty close to the one I grew up with. I can't wait until my uncle brings me back some Bocconcini so I can use the correct cheese. Thank you Satyne! Made for Photo Tag Summer 2013.