What a kid'll eat, in song
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">what a kid'll eat in song</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ivy that I've seen before include "Song: 'Poison --'" , "Creeper plant" , "Trailer" , "With holly, it's seasonally decorative" , "Female" .)