Second tea? Perhaps a coffee? (5)
I believe the answer is:
mocha
'a coffee?' is the definition.
(type of coffee drink)
'second tea?' is the wordplay.
'second' becomes 'mo' (both are short periods of time).
'tea?' becomes 'cha' (cha is a type of tea).
'mo'+'cha'='MOCHA'
'perhaps' is the link.
(Other definitions for mocha that I've seen before include "Coffee flavour" , "Dark brown" , "Coffee drink" , "Fine quality coffee" , "It may end up as grounds" .)