Gateau (4)
I believe the answer is:
cake
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gateau</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cake that I've seen before include "Eg, Genoa, Dundee" , "Marie Antoinette's solution to 8" , "Set" , "Piece of soap" , "Sweet baked food" .)