We have seen a bunch of robotic bartenders in the past. If you love playing with Raspberry Pi and other DIY electronics platform, you could always build your own. That’s what Next Project Awesome has done. The Drinkinator is an automated bartender with RobotGeek Pumping Stations, a Geekduino, and a Raspberry Pi touch screen interface. You will just have to select your drink and size and let the machine doe the rest.
You can find out more about this project on GitHub.