Heat the olive oil in a heavy saucepan. Season the pork (or other meat) generously with salt and pepper. Brown the meat on all sides for several minutes or until golden. Add the garlic and onions and cook for 2 minutes. Ad the white wine, chicken stock, fresh tomatoes and water and bring to a boil. Pour into a slow cooker and cook on high for 4 hours or until the meat is tender and falling apart. In the last 15-20 minutes of cooking, stir in the cauliflower and fresh oregano. Serve hot.