Drank a rum after initially taking pot (7)
I believe the answer is:
tankard
'pot' is the definition.
(I've seen this before)
'drank a rum after initially taking' is the wordplay.
'rum' is an anagram indicator (rum can mean strange or unusual).
'after' is a charade indicator (letters next to each other).
'initially' indicates taking the first letters.
The initial letter of 'taking' is 't'.
'drank'+'a'='dranka'
'dranka' with letters rearranged gives 'ankard'.
'ankard' after 't' is 'TANKARD'.
(Other definitions for tankard that I've seen before include "Mug-like drinking vessel" , "Metal beer mug" , "Tall beer mug" , "One-handled drinking mug" , "A drinking mug with handle" .)