Preheat the oven to 300 degrees F. Arrange the short ribs in a 13-by-9-inch baking dish and season with salt and pepper, to taste. In a small bowl, combine all the remaining ingredients and stir to incorporate. Pour the sauce over ribs and toss well, coating all the pieces. Cover with aluminum foil and roast until cooked through and tender, about 3 hours. Remove the foil during the last 30 minutes of cooking to brown the top. Transfer to a serving platter and serve.