Light dessert (6)
I believe the answer is:
mousse
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">light dessert</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mousse that I've seen before include "Whipped sweet" , "Creamy dessert; hair dressing" , "Frothy creamy substance for styling hair" , "Frothy, creamy dessert" , "cold dish" .)