Add the onions and garlic and saute for 1 minute. Add the tomatoes, wine, thyme, oregano, fennel and hot sauce (if using) and bring to a boil. Cover, and put in oven. Braise for 3-4 hours, turning every hour or so. If you are cooking less pork (only 1 pound or 1.5), you only need to braise for 2 hours. Add more liquid (water, wine, or tomato sauce) if needed. I recommend adding more tomato sauce. (The liquid should come to about 1/3 of the way up the pork.) Meat is done when it’s practically falling apart. Put on a cutting board and pull it apart with two forks, then add back to pot and stir.