Fondant icing a supersaturated solution until nucleation occurs. While the solution is supersaturated, if a cook puts a seed crystal (undissolved sucrose) into the mix, or agitates the solution, the dissolved sucrose crystallizes to form large, crunchy crystals (which is how rock candy is made). However, if the cook lets the solution cool undisturbed and then stirs it vigorously, it forms many tiny crystals, resulting in a smooth-textured fondant. Fondant icing Fondant icing, also commonly referred to simply as fondant (, ), is an icing used to decorate or sculpt cakes and pastries. It is made from sugar, water, gelatin, butter, and
Doberge cake or caramel. Beulah Levy Ledner, born into a Jewish family in St. Rose, Louisiana, opened a bakery in New Orleans in 1933. She became very successful after creating her "Doberge cake" adapted from the Hungarian/Austrian Dobos Cake, a cake made of nine génoise cake layers filled with buttercream and topped with a hard caramel glaze. The doberge cake is based on a recipe originating in Alsace-Lorraine. Ledner replaced the buttercream filling of the Dobos Cake with a custard filling and iced the cakes with buttercream and a thin layer of fondant . Beulah Ledner's recipe is available in the cookbook,