Scoff awkward to rustle up for a first course, perhaps (4,6,4)
I believe the answer is:
mock turtle soup
'a first course perhaps' is the definition.
'scoff awkward to rustle up' is the wordplay.
'scoff' becomes 'mock' (I've seen this before).
'awkward' is an anagram indicator.
'to'+'rustle'='torustle'
'torustle' is an anagram of 'turtleso'.
'mock'+'turtleso'+'up'='MOCK TURTLE SOUP'
'for' acts as a link.
(Other definitions for mock turtle soup that I've seen before include "for which bovine head is used as substitute" , "starter" , "First course" .)