Kitchen herb (5)
I believe the answer is:
basil
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">kitchen herb</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 basil that I've seen before include "serially chaotic character" , "Mediterranean herb" , "Aromatic herb in pesto" , "Aromatic plant used as a herb" , "Plant; Brush; Fawlty" .)