Name of bread roll accompanying thin stew occasionally (7)
I believe the answer is:
baptise
'name' is the definition.
(I know that baptise is a more specific form of the action name)
'bread roll accompanying thin stew occasionally' is the wordplay.
'bread roll' becomes 'bap' (bap can mean a roll).
'accompanying' means one lot of letters go next to another.
'occasionally' means one should take alternating letters (letters taken at regular intervals or occasions).
'thin'+'stew'='thinstew'
The alternate letters of 'thinstew' are 'tise'.
'bap'+'tise'='BAPTISE'
'of' is the link.
(Other definitions for baptise that I've seen before include "Christen" , "Administer the first RC sacrament" , "First Roman Catholic sacrament" , "Give name" .)