Andean root vegetable (3)
I believe the answer is:
oca
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">andean root vegetable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oca that I've seen before include "Plant grown in Peru for its edible tubers" , "Edible sorrel" .)