Aniseed liqueur (8)
I believe the answer is:
absinthe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aniseed liqueur</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 absinthe that I've seen before include "intoxicant" , "Green wormwood drink" , "French liqueur" , "Strong liquour in the basin?" , "Liqueur - the basin (anag)" .)