In a large skillet over medium-high heat, cook the meat, breaking it up as it browns. Once fully cooked, blend the scallions, bell peppers, onions, ginger, and garlic with 1/4 cup of water until smooth, then pour the blended mixture into the skillet with the meat. Stir everything together until fragrant and well combined. Mix in the ketchup, browning sauce, oyster sauce, and soy sauce, ensuring the meat is evenly coated, and let it simmer gently. While the meat cooks, prepare the panade by blending the bread pieces and water in a blender until a thick paste forms. Once ready, stir the panade into the seasoned meat mixture, mixing thoroughly until the texture becomes thick and emulsified. Set the mixture aside.