Medley
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">medley</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 olio that I've seen before include "Collection of miscellany" , "Mixture" , "Variety" , "Savoury dish of different types of meat and vegetable" .)