Cake covering (5)
I believe the answer is:
icing
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cake covering</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 icing that I've seen before include "Sweet thing" , "Topping in a bag" , "You could see this on a cake" , "Cake-topper" , "in the freezer?" .)