Plant making whiskey and lager retired by company (7)
I believe the answer is:
cowslip
'plant making whiskey' is the definition.
'cowslip' can be an answer for 'plant' (I've seen this before). I'm not certain of the 'making whiskey' bit.
'lager retired by company' is the wordplay.
'lager' becomes 'pils' (Pilsner beer).
'retired' is a reversal indicator.
'by' is a charade indicator (letters next to each other).
'company' becomes 'cow' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pils' backwards is 'slip'.
'slip' after 'cow' is 'COWSLIP'.
'and' is the link.
Can you help me to learn more?
(Other definitions for cowslip that I've seen before include "Pretty little wild flower for unsteady bovine" , "Wild flower of primrose family" , "Fictional rabbit" , "Yellow field flower" , "Wild spring flower" .)