Such a cool place! It's located in the basement of Sip. It's very small so I highly recommend a reservation. We were a group of four and I was a little disappointed that they do not actually have tables that seat four. We were given two tables for two, and unfortunately the stools do not move. We ended up just standing around one of the tables. We all spilt the scorpion bowl to start, which serves 3-4. It was amazing! So fresh and fruity, yet strong. I could feel the alcohol pretty quickly, but didn't taste it at all (like grown up jungle juice!). While the drinks are amazing (who doesn't like tropical tiki drinks?), my favorite part of Undertow is the boat decor. After a couple of drinks, you really do feel like your under the deck of a pirate's ship!