Accessed butter, tonnes having been imported
I believe the answer is:
got at
'accessed' is the definition.
('get at' can be a synonym of 'access')
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for got at that I've seen before include "Unfairly influenced" , "Attacked verbally" , "Criticised" , "Nobbled" .)