Cut the brisket into 3x3 cubes. Season with the garlic powder and salt. Place the meat in a pressure cooker, and fill with water so that the meat is submersed in water. Cook in the pressure cooker for 30 minutes.
While the meat is cooking, cut the onions and bell peppers into strips. Press the garlic in a garlic press.
When the meat is done cooking, carefully release the pressure from the pressure cooker. Take all the meat out and place on a cutting board or plate. Using a fork, shred the meat into strips.
Lightly cover the bottom of a cooking pan with oil and heat over medium-high heat. Once hot, add the garlic, onions, and peppers and cooking for about 3 minutes. Add the meat afterwards and cook for another 3 minutes, incorporating the meat with the vegetables.
Add the white cooking wine and tomato sauce and stir to mix all the ingredients together. Cook for another 10-15 minutes. Add additional season with garlic powder and salt to tasted.
Serve and enjoy!