Coffee order (9)
(Other definitions for americano that I've seen before include "drink" , "Style of coffee" , "Espresso diluted with hot water" .)
'coffee order' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mocha that I've seen before include "Yemeni port; type of coffee bean" , "Macho (anag.); coffee with chocolate" , "It may end up as grounds" , "Strong dark coffee" , "Kind of coffee" .)