Old sailors' tipple (4)
I believe the answer is:
grog
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">old sailors' tipple</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 grog that I've seen before include "Rum mixed with water" , "Drink of spirits mixed with water" , "The old sailor's tradition drink" , "Old naval drink" , "Naval rum issue" .)