Drink alcohol regularly (6)
I believe the answer is:
tipple
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">drink alcohol regularly</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 tipple that I've seen before include "Paint < pot" , "Drink (a little but often)" , "Imbibe" , "(Regular) alcoholic drink" , "Drink constantly in small quantities" .)