In due course consume pickle (5)

I believe the answer is:

souse

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'pickle' is the definition.
(I've seen this in another clue)

'in due course consume' is the wordplay.
'in due course' becomes 'so' (I can't justify this - if you can you should believe this answer much more).
'consume' becomes 'use' (use can mean to consume or get through).
'so'+'use'='SOUSE'

Can you help me to learn more?

(Other definitions for souse that I've seen before include "dip" , "Marinate" , "Duck" , "Pickled meat" , "Drench" .)

I've seen this clue in The Telegraph.

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