Chocolate substitute (5)
I believe the answer is:
carob
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chocolate substitute</span>' is the definition.<br/ ><span class="explanation-format__explanation">(carob powder is a chocolate substitute)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for carob that I've seen before include "Bean, a choc. substitute" , "Saint John's bread" , "Evergreen tree with edible pods" , "St John's bread" , "Arabian tree with brownish-purple pods" .)