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' is an anagram indicator (rum can mean strange or unusual).
'with' means one lot of letters go next to another.
'endless' means to remove the last letter.
'voracity' becomes 'greed' (I've seen this in another clue).
'greed' with its final letter removed is 'gree'.
'neat' with letters rearranged gives 'ntea'.
'ntea' 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)" .)