Mexican drink (7)
I believe the answer is:
tequila
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mexican 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 tequila that I've seen before include "Mexican agave spirit" , "Mexican liquor made from agave" , "Is there another drink to equal it?" , "Cocktail -- 1988 American crime film -- equaliser units (anag)" , "Equal it! (anag)" .)