Pudding recipe instruction (4)
I believe the answer is:
stir
'pudding recipe instruction' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stir that I've seen before include "Commotion; wake" , "Begin to move" , "Arouse; mix" , "A slangy prison - whisk it" , "Budge" .)