These little French biscuits originated in the Duchy of Savoy in France. They are hard, dry, egg based, fatless sponge biscuits that are very crisp, so they stand up well to be dunked or used to line cake tins to make charlottes or trifles. They are know by many names all over the world such as: lady fingers or long fingers savoiardi biscuits or savoy biscuits sponge fingers baby biscuits - they were often given to babies as a teething biscuit. cat's tongue sole biscuits