Speak of a gold blend of tea (5)
I believe the answer is:
orate
'speak' is the definition.
(orating is a kind of speaking)
'a gold blend of tea' is the wordplay.
'a gold' becomes 'or' ('or' is the heraldic name for gold).
'blend of' indicates anagramming the letters (I've seen this in other clues).
'tea' anagrammed gives 'ate'.
'or'+'ate'='ORATE'
'of' acts as a link.
(Other definitions for orate that I've seen before include "Lecture" , "Erato (anag.)" , "Hold forth" , "Speak in florid style" , "Deliver a speech" .)