Drink neat rum with endless voracity (5,3)
I believe the answer is:
green tea
'drink' is the definition.
(type of tea)
'neat rum with endless voracity' is the wordplay.
'rum' indicates anagramming the letters (rum can mean strange or unusual).
'with' is a charade indicator (letters next to each other).
'endless' means to remove the last letter.
'voracity' becomes 'greed' (I've seen this before).
'greed' with its last letter removed is 'gree'.
'neat' is an anagram of 'ntea'.
'ntea' put after 'gree' is 'GREEN TEA'.
(Other definitions for green tea that I've seen before include "brew-up?" , "Infused drink" , "'Asian herbal drink (5,3)'" , "Beverage" , "Hot drink - teenager (anag)" .)