Cylindrical cake (5,4)
I believe the answer is:
swiss roll
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cylindrical cake</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for swiss roll that I've seen before include "Filled sponge cake" , "Cylindrical sponge cake with layers of jam" , "teatime treat?" , "Tumble down the ski slopes maybe" , "Type of sponge cake" .)