This cake was made for Dr Johanna Ullrich, a phosphate-analysis specialist, to mark her departure from the University College Dublin School of Archaeology last October. On top of the cake there is an Ogham stone, a grey box marked ‘phosphate analysis’, and the blue book is Renfrew and Bahn’s Archaeology: theories, methods and practice. Sent in by Niamh Kelly, featured in issue 269 of Current Archaeology.