Oriental ate out and had a banquet (7)
I believe the answer is:
feasted
'had a banquet' is the definition.
The answer and definition can be both related to consumption as well as being past participle verbs.
Maybe you can see an association between them that I don't see?
'oriental ate out' is the wordplay.
'oriental' becomes 'east' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ate' becomes 'fed' ('feed' can be a synonym of 'eat').
'out' is an insertion indicator.
'east' going into 'fed' is 'FEASTED'.
'and' is the link.
Can you help me to learn more?
(Other definitions for feasted that I've seen before include "Ate lavishly" , "Banqueted" , "Ate high off the hog" , "Had a lot to eat" .)