Hot chocolate drink (5)
I believe the answer is:
cocoa
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hot chocolate 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 cocoa that I've seen before include "Main constituent of chocolate" , "Drinking chocolate" , "Warming bedtime drink" , "It's made from the seed of the cacao tree" , "drink from beans" .)