cakeage
cakeage
(ˈkeɪkɪdʒ)n
a charge levied in a restaurant for serving cake (such as a birthday cake) brought in from outside the premises
[C21: modelled on corkage]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014