Soy-Braised Pork Shoulder (Ti Pang)

My mom is a master with this dish - she makes it for all of our birthdays and often with long life noodles on the side. This is my first crack at it, and it turned out surprisingly delish: just a few ingredients and the cooking method is very similar to that which I use for making braised pork bellies. The key is to cook it low and slow until it's super tender. The onion, carrot, and tomato aren't traditional, but they definitely lend a nice boost of flavor to this dish.