Ox Tail Stew @ my home

My mom makes the BEST ox tail stew, and it has been a long time since she's made it. She decided to make it yesterday, after purchasing two ox tails from Chinatown. I have no idea what she puts into it besides ox tail and carrots, but I assume there is a mixture of fish sauce, water, and fermented black beans. I have some to take to Panda this wknd.