Basic sugar (7)
I believe the answer is:
sucrose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">basic sugar</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 sucrose that I've seen before include "Sweet substance" , "Basis of cane sugar" , "Sweetening agent -- Croesus (anag)" , "Chief component of cane or beet sugar" , "Sweetener" .)