Deride eating awfully twee vegan food (9)
I believe the answer is:
sweetcorn
'vegan food' is the definition.
'sweetcorn' can be an answer for 'food' (I've seen this before). I'm not certain of the 'vegan' bit.
'deride eating awfully twee' is the wordplay.
'deride' becomes 'scorn' (I am not sure about this - if you are sure you should believe this answer much more).
'eating' means one lot of letters goes inside another.
'awfully' indicates an anagram.
'twee' is an anagram of 'weet'.
'scorn' placed around 'weet' is 'SWEETCORN'.
Can you help me to learn more?
(Other definitions for sweetcorn that I've seen before include "Healthy food" , "veg" .)