It's hard to believe you can have a complete meal with tender, melt-in-your-mouth beef short ribs in less than 1 1/2 hours start to finish, but a pressure cooker handles the task with ease. Thicken the sauce with a little flour or serve with the strained and defatted liquids. The ribs were cooked in an electric pressure cooker similar to the instant pot. A non-electric pressure cooker could be used as well, just follow the manufacturer's instructions. The ribs may also be prepared and cooked on the stovetop in a covered dutch oven.