Busy person, with twist of fate, produces energy drink (4,3)
I believe the answer is:
beef tea
'energy drink' is the definition.
'beef tea' can be an answer for 'drink' (I've seen this before). I am not sure about the 'energy' bit.
'busy person with twist of fate' is the wordplay.
'busy person' becomes 'bee' (I've seen this in other clues).
'with' is a charade indicator (letters next to each other).
'twist of' indicates an anagram (I've seen 'twisting' mean this).
'fate' is an anagram of 'ftea'.
'bee'+'ftea'='BEEF TEA'
'produces' is the link.
Can you help me to learn more?
(Other definitions for beef tea that I've seen before include "Juice from stewed meat for invalids" , "Bovril" , "Hot drink made with meat" , "Meat solution for invalids" , "Meaty drink" .)