Stirred fish in empty saucepan (6)
I believe the answer is:
shaken
'stirred' is the definition.
('shake' can be a synonym of 'stir')
'fish in empty saucepan' is the wordplay.
'fish' becomes 'hake' (I've seen this before**).
'in' is an insertion indicator.
'empty' suggests removing the centre.
'saucepan' with its middle taken out is 'sn'.
'hake' going into 'sn' is 'SHAKEN'.
(Other definitions for shaken that I've seen before include "Dismayed, unnerved" , "Astonished; vibrated" , "Shocked; astonished" , "jarred" , "James Bond liked his martinis this way, not stirred" .)