1 box Monograno Felicetti Matt Egg Tagliatelle 1 medium onion, chopped 1 celery stalk, chopped 1 small carrot, peeled, chopped 1 pound ground beef chuck (20% fat), patted dry Kosher salt 3 oz. thinly sliced pancetta, chopped cup tomato paste 1 bay leaf 2 cups (or...