Texan, say, with nothing to drink (9)
I believe the answer is:
americano
'to drink' is the definition.
(type of coffee drink)
'texan say with nothing' is the wordplay.
'texan say' becomes 'American' (texan is a kind of American).
'with' says to put letters next to each other.
'nothing' becomes 'O' (looks like zero - 0).
'american'+'o'='AMERICANO'
(Other definitions for americano that I've seen before include "Espresso diluted with hot water" , "Style of coffee" , "drink" .)