Verona's drop of espresso average (5)
I believe the answer is:
soave
'verona's drop' is the definition.
(wine from Verona)
'of espresso average' is the wordplay.
'of' says the answer is hidden in the clue.
'SOAVE' is hidden in the letters of 'espresso average'.
(Other definitions for soave that I've seen before include "Drink" , "Italian wine region" , "Dry white wine from Verona" , "White wine from NE Italy" , "Italian dry white wine" .)