"This no cook dessert is a favourite of mine. The biscuits used are 'Morning coffee' or 'Marie biscuits'. You can also use the LU Cookies or Rich Tea Biscuits that can be bought from Amazon. I have not seen the Marie or Morning Coffee type in the US except at the PBX on an armed forces base! They have all sorts of European food! This was really popular when we were young as it was one thing we were allowed to make as it did not involve anything electric or hot! I believe the British were the first to make it - came to that assumption because of the British Biscuits used but if anyone knows the origin...please let me know!..."