The ladyfingers or biscuit ala cuillere. Some people called ladyfingers, some biscuit and other cuillere. I was told cuillere is refer to snacks for babies in French. And biscuit is just another cookie. I am suppose to called it the more poetic name boudoir. I use them for Tiramisu and Charlotte.
Anyway making it is simple. As simple as running to go to the store and just grab some.
These are biscuit rose de Reims. I don't see them at the store here so I did grab some while I was in France not long ago.