You can’t get a reservation at one of Midtown’s newest watering holes. And, to get in, you go through the biergarten at Urban Chestnut Midtown. There’s a small hut the brewery serves beer from during the summer. Go behind that, and you’ll find a waiting room and a black door. If the red light is on, go in. In our monthly restaurant episode, STLPR’s Jessica Rogen and Abby Llorico discuss new speakeasies around town as well as the latest restaurant openings and closings.