Everyone returned after peak time, one flat fare (8)
I believe the answer is:
tortilla
'fare' is the definition.
(tortilla is a kind of food)
'everyone returned after peak time one flat' is the wordplay.
'everyone' becomes 'all' (all people).
'returned' says the letters should be written backwards.
'after' says to put letters next to each other.
'peak' becomes 'tor' (a tor is a rocky peak).
'time one flat' becomes 'ti' (I am not sure about this - if you are sure you should believe this answer much more).
'all' backwards is 'lla'.
'tor'+'ti'='torti'
'lla' put after 'torti' is 'TORTILLA'.
Can you help me to learn more?
(Other definitions for tortilla that I've seen before include "Mexican flatbread" , "Littoral (anag.)" , "Cake including maize" , "hot meal?" , "In which one may see salsa" .)