Sour cherry (7)
I believe the answer is:
morello
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sour cherry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that morello is a type of sour cherry)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for morello that I've seen before include "Type of cherry" , "Sour red fruit" , "Variety of sour cherry" , "Dark-red variety of cherry" , "Dark red cherry" .)