|Alternative names||Schneewittchenkuchen, Schneewittchentorte|
|Place of origin||Germany and Austria|
|Main ingredients||Flour, butter, eggs and sugar, sour cherries, buttercream, cocoa and chocolate|
|Cookbook: Donauwelle Media: Donauwelle|
Donauwelle (lt:Danube wave) is a traditional sheet cake popular in Germany and Austria. It's a pound cake with sour cherries, buttercream, cocoa and chocolate and like a Marble cake bright and dark cake batter are mixed into each other to create swirl effects.
Due to its wavy pattern inside and its chocolate decoration that resembles waves it got its name although the derivation of the term "Donau" is not clear. It could be a hint to the prevalence of the cake that is popular in those states that the river Donau flows through .
Another name is Schneewittchenkuchen which means Snow-White-Cake and gives credit to the colour combination black, white and red that is also mentioned in the fairy tale of Snow White.
The batter is prepared out of butter, flour, eggs and sugar and then divided into two parts, one of which is coloured with cocoa. The two batters are spread onto the baking sheet, the cocoa batter above the base batter. The sheet cake is then plated with sour cherries and baked. During the baking process the cherries sink to the bottom of the cake thereby causing the wavy swirl pattern. After the cake has cooled it is decorated with a thick layer of buttercream and iced with a chocolate glaze which is then ornamented in a wavy manner with a fork.