Corn sugar (8)
I believe the answer is:
dextrose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">corn sugar</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 dextrose that I've seen before include "Form of glucose" , "sweetener" , "Form of sugar, in honey, say" , "sweet stuff" .)