Author after Medusa, perhaps, tasty Italian fare (10)
I believe the answer is:
gorgonzola
'tasty italian fare' is the definition.
(type of Italian cheese)
'author after medusa perhaps' is the wordplay.
'author' becomes 'zola' (Zola is an example).
'after' says to put letters next to each other.
'medusa perhaps' becomes 'gorgon' (Medusa, gorgon in Greek myth).
'zola' after 'gorgon' is 'GORGONZOLA'.
(Other definitions for gorgonzola that I've seen before include "Big cheese" , "Blue-veined cheese" , "Italian town" , "Italian blue cheese" .)