Wine and tea and endless joy (7)
I believe the answer is:
chablis
'wine' is the definition.
(Chablis is an example)
'tea and endless joy' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'and' is a charade indicator (letters next to each other).
'endless' means to remove the last letter.
'joy' becomes 'bliss' (I've seen this before).
'bliss' with its last letter removed is 'blis'.
'cha'+'blis'='CHABLIS'
'and' acts as a link.
(Other definitions for chablis that I've seen before include "Classic white wine from Burgundy" , "French dry white wine" , "French town noted for white Burgundy wines" , "Dry white Burgundy" , "Burgundy town and white wine" .)