without question it's Nat's BBQ -->
http://haydensrealbbq.com/Home.php
super great food, super great guy, and they carry on tap *the best* rootbeer that the United States has to offer. I've probably had 30+ specialty rootbeers, and Hosmer Mountain Soda blows the rest out of the water. It's not even close. If you're a fan of rootbeer, sarsaparilla, white birch or cream soda then you need to try out Hosmer's stuff.
plus this place is only 15min from Rentschler Field, so super convenient.