Blend of teas that fully satisfy (4)
I believe the answer is:
sate
'fully satisfy' is the definition.
(I've seen this before)
'blend of teas' is the wordplay.
'blend of' indicates anagramming the letters (I've seen this in other clues).
'teas' with letters rearranged gives 'SATE'.
'that' acts as a link.
(Other definitions for sate that I've seen before include "Fill to repletion" , "Supply to excess" , "Fulfil to excess" , "Fill to satisfaction" , "Satisfy - surfeit" .)