Two firms with a bedtime drink? (5)
I believe the answer is:
cocoa
'bedtime drink?' is the definition.
(I've seen this before)
'two firms with a' is the wordplay.
'two firms' can mean two replacements for 'firm'.
'firm' becomes 'co' (a firm is a company).
'firm' becomes 'co' (a firm is a company).
'with' says to put letters next to each other.
'co'+'co'+'a'='COCOA'
(Other definitions for cocoa that I've seen before include "Chocolate ingredient" , "Hot beverage" , "Main constituent of chocolate" , "Chocolate powder" , "Hot brown drink" .)