Cider and lager drink (9)
I believe the answer is:
snakebite
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cider and lager drink</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 snakebite that I've seen before include "Cider and lager - it could be poisonous" , "Drink made of lager and cider" , "strong drink" , "Cider mixed with lager" , "may poison you" .)