Strolled past Maison Blanc's window and was dazzled by what was on show. Goof thing I had taken my camera along!
Maison Blanc is run by a famous French chef, Raymond Blanc, who resides in England and runs various stores peppered around London.
I think this is some sort of simple French cake eaten around Christmas time. And if I remember correctly a piece of porcelain is hidden in the cake and whoever breaks their tooth on it, is crowned king or queen for the day.