Produced without chemicals (7)
I believe the answer is:
organic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">produced without chemicals</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for organic that I've seen before include "Derived from natural sources" , "Fundamental" , "Derived from animal or vegetable matter" , "Natural (farming)" , "Free of pesticides" .)