Pork pie and case of Grenache for lord (5)
I believe the answer is:
liege
'for lord' is the definition.
(feudal term for a superior)
'pork pie and case of grenache' is the wordplay.
'pork pie' becomes 'lie' ('pork pie' is Cockney rhyming slang for a lie).
'and' means one lot of letters go next to another.
'case of' suggests removing the centre (outsides of).
'grenache' with its centre removed is 'ge'.
'lie'+'ge'='LIEGE'
(Other definitions for liege that I've seen before include "Belgian city or ancient superior" , "Chieftain" , "Faithful," , "Loyal subject" , "Belgian city or feudal chief" .)