Strong flavour (4)
I believe the answer is:
tang
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">strong 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 tang that I've seen before include "Strong flavour/smell" , "Strong taste or smell" , "tastefulness" , "Sharp smell of gnat" , "Dynasty's" .)