Savoury flavour (5)
I believe the answer is:
umami
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">savoury flavour</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for umami that I've seen before include "Newly discovered taste" , "Fifth flavour" , "meaty taste" , "Savoury flavour" , "Japanese word for pleasant savoury taste" .)