Unleavened bread and tea with papa at one (7)
I believe the answer is:
chapati
'unleavened bread' is the definition.
(type of Indian bread)
'tea with papa at one' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'with' means one lot of letters go next to another.
'papa' becomes 'P' (phonetic alphabet: alpha, bravo, charlie etc.).
'one' becomes 'i' (Roman numeral).
'cha'+'p'+'at'+'i'='CHAPATI'
'and' acts as a link.
(Other definitions for chapati that I've seen before include "Sort of bread" , "What Indian waiter might bring" , "Unleavened bread of India" , "Indian pancake" , "Indian food" .)