How to make:
SHAKE all ingredients with ice and fine strain into chilled glass.
Dust with cinnamon powder
OK, so there's no crust, but this does contain egg yolk, caramel, vanilla, sugar and cream. Due to the cinnamon, it even has a brown top.
Adapted from a drink created in 2002 by Yannick Miseriaux at the Fifth Floor Bar, London, England.