When The Cedars Social's head barman Michael Martensen quietly opened the doors to Bar 828 in Oak Cliff, a charity-benefiting pop-up bar in Oak Cliff, it was only a matter of minutes until the place was packed. Martensen brought in the area's top bartenders to mix drinks. It was so popular that only a few months later he did the same thing in Deep Ellum, where Hid In popped up in Cane Roso's extra room. It was like a bartender's playground, where mixologists were able to get a little more adventurous than they would in their home bars.