Popular drink's pronounced effect (6)
I believe the answer is:
induce
'effect' is the definition.
(inducing is a kind of effecting)
'popular drink's pronounced' is the wordplay.
'popular' becomes 'in'.
'drink's pronounced' becomes 'duce' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in'+'duce'='INDUCE'
Can you help me to learn more?
(Other definitions for induce that I've seen before include "Persuade, hasten childbirth" , "Persuade or bring on, say birth" , "Bring on by artificial means" , "Give rise to" , "Bring on, cause to happen" .)