The owners of Little O's really put their heart and soul into this place and you can tell. From the authenticity of the soda fountain items, special "old time" candies and really delicious desserts. The Gooey Butter Cake, a St. Louis favorite, is made from a recipe passed down for over fifty years and is the best I've ever had! Try it in the Gooey Butter Cake Milkshake. They also have authentic flavored soda's, ice cream sodas, malts... All kinds of 50's diner classics. We will be back whenever we're in St. Charles!