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Zwieback is a form of rusk eaten in Germany and Italy, it is a type of crisp, sweetened bread, made with eggs and baked twice. It originated in East Prussia. The Mennonites brought Zwieback to the Russian Empire; during and after the Russian Revolution, when many fled, they brought Zwieback to Canada, the United States and other parts of the world.
It is sliced before it is baked a second time, which produces crisp, brittle slices that closely resemble melba toast. Zwieback is commonly used to feed teething children, Zwieback hence literally translates to "twice-baked". [...]
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