Second hot drink, coffee (5)
I believe the answer is:
mocha
'coffee' is the definition.
(type of coffee drink)
'second hot drink' is the wordplay.
'second' becomes 'mo' (both are short periods of time).
'hot drink' becomes 'cha' (cha can mean tea).
'mo'+'cha'='MOCHA'
(Other definitions for mocha that I've seen before include "Kid" , "Fine-quality coffee" , "Strong dark coffee" , "Dark brown" , "Macho (anag.); coffee with chocolate" .)