Jam or butter (6)
I believe the answer is:
spread
This clue is a double definition.
'jam' is the first definition.
(thesaurus)
'butter' is the second definition.
(thesaurus)
(Other definitions for spread that I've seen before include "Open, fan out, unfold" , "Disseminate through padres" , "Distributed over" , "Parsed (anag.)" , "Type of betting" .)