It’s simple and just the right portion. Golf ball-sized meatballs lathered with a delish tomato sauce, resting between three individual pretzel buns. They hit the spot. But first, you must find the secret phone number to this Music City speakeasy and dial it into the antique London-style red phone booth. Or find the right hotel concierge and you may just be lucky enough to sink your teeth into this delicious dish.