Served up endless dry cheese and fortified wine (7)
I believe the answer is:
madeira
'fortified wine' is the definition.
(Madeira is an example)
'served up endless dry cheese' is the wordplay.
'served up' says the letters should be written in reverse.
'endless' means to remove the last letter.
'dry' becomes 'arid' ('arid' can be similar in meaning to 'dry').
'cheese' becomes 'edam' (Edam is an example**).
'arid' with its final letter removed is 'ari'.
'ari'+'edam'='ariedam'
'ariedam' reversed gives 'MADEIRA'.
'and' acts as a link.
(Other definitions for madeira that I've seen before include "Island in the Atlantic Ocean" , "Atlantic territory" , "Islands in the Stream?" , "cake producer" , "Sponge-cake" .)