Spongy sweet (11)
I believe the answer is:
marshmallow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spongy sweet</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 marshmallow that I've seen before include "Spongy jellylike sweet" , "Spongy confection - wild flower" , "Sweet, often toasted" , "Spongy confection - pink-flowering plant" , "sweet little thing" .)