When doubled, a candy
I believe the answer is:
bon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">when doubled a candy</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 bon that I've seen before include "Repeated, it's a tasty sweet" , "'At the double, it's a sweet, good for the French (3)'" , "C'est good in France" .)