Rotier’s looks like a bar, and it is: beer-sign décor, dark wood-panel walls, cozy back-room booths suitable for private rendez-vous. Ambience notwithstanding, this is a restaurant that attracts families, nice white-haired ladies, polite couples on dates, and just about every other sort of person in and around Nashville who appreciates a first-class hamburger. Rotier’s burgers, served on French bread, are monumental. Piled in with lettuce, tomato, pickle, and mustard (and preferably crowned with a slab of bright orange cheese, too), the rugged-textured meat patty is stuck inside its two tiles of bread with a long toothpick. It is a beautiful sight; and once the toothpick is removed, the diner faces a significant challenge keeping the sandwich intact as it is lifted from plate to mouth. To go with this hamburger are fresh, crisp French fries … and a choice from a list of several dozen beers.