I'm not sure I'm able to get into Australian instant coffee (9)
I believe the answer is:
americano
'coffee' is the definition.
(I've seen this before)
'i'm not' is the wordplay.
'i'm' becomes 'america' (I can't explain this - if you can you should believe this answer much more).
'not' becomes 'no' (I've seen this in other clues).
'america'+'no'='AMERICANO'
'sure i'm able to get into australian instant' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
(Other definitions for americano that I've seen before include "drink" , "Espresso diluted with hot water" , "Style of coffee" .)