Ya, it's pretty easy...or as hard as you want to make it. There are lots of "traditional" recipes out there for root beer, but most of them call for sassafras, which you'll have a really hard time finding (it's considered a carcinogen). It's fun to try and make it yourself, and there is a book called "Home Made Soda" that is excellent for using real ingredients (the lemon lime soda in that book is really good). That all being said, you can also buy soda extracts in a variety of flavors and mix with sugar and water. Then you can either keg it (easiest and least dangerous) or you can add a small amount of yeast and bottle it. If you bottle it, I strongly recommend putting at least one bottle in a plastic bottle so that you can check the pressure. Once that plastic bottle is firm, get the rest of the glass into the fridge ASAP and drink within the next week or so lest you make glass frag grenades. As was mentioned, all of this can be had at your local purveyor of home brewing supplies (preferably Salt City Brew Supply or Ogden City Brew Supply).
But to answer the original question, no we don't make a root beer. We've talked about it, but with our joint being 21 and over, I question the popularity of it. We do carry some local craft sodas that I personally really like, basic sodas, spicy waters, and we're working on putting nitro cold brew coffee and likely kombucha on tap for other alternatives for the non drinking sausage lovers amongst us.