ATMOSPHÈRE RESTAURANT is that hidden gem that proves good French food in an authentic setting is not a pipe dream. Classics such as escargot dotted with crunchy miniature croutons, mussels served with perfect homemade frites, a leg of crispy duck confit served alongside an impeccable potato gratin, and wine choices ranging from carafes of a house Côtes du Rhône to costly bottles of “reserve” wines make this quaint French eatery a regular destination for Atlanta francophiles.