The cafeteria food served up in there is pretty average (4)
I believe the answer is:
fair
'pretty average' is the definition.
'fair' can be an answer for 'average' (synonyms). I am not certain of the 'pretty' bit.
'the cafeteria food served up in' is the wordplay.
'in' indicates the answer is hidden within the clue.
'served up' says the letters should be written in reverse (in a down clue, going upwards).
'riaf' is hidden within 'cafeteria food'.
'riaf' backwards is 'FAIR'.
'there is' acts as a link.
Can you help me to learn more?
(Other definitions for fair that I've seen before include "Blonde; beautiful" , "Equitable; expo" , "Market for the sale of produce" , "Reasonable - market" , "Moderately good; blonde" .)