Wine and tea leading to endless happiness (7)
I believe the answer is:
chablis
'wine' is the definition.
(I know that Chablis is a type of white wine)
'tea leading to endless happiness' is the wordplay.
'tea leading' becomes 'cha' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to endless' means to remove the last letter.
'happiness' becomes 'bliss' (bliss is a kind of happiness).
'bliss' with its final letter taken away is 'blis'.
'cha'+'blis'='CHABLIS'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for chablis that I've seen before include "French town noted for white Burgundy wines" , "Dry Burgundy wine" , "French dry white wine" , "Dry white Burgundy" , "Town in north central France noted for white Burgundy wines" .)