Seated, eating cold Japanese noodles over US city (10)
I believe the answer is:
sacramento
'us city' is the definition.
(I've seen this before)
'seated eating cold japanese noodles' is the wordplay.
'seated' becomes 'sato' (I am not sure about this - if you are sure you should believe this answer much more).
'eating' is an insertion indicator.
'cold' becomes 'C' (eg on taps).
'japanese noodles' becomes 'ramen' (I've seen this in another clue).
'c'+'ramen'='cramen'
'sato' placed around 'cramen' is 'SACRAMENTO'.
'over' is the link.
Can you help me to learn more?
(Other definitions for sacramento that I've seen before include "US city" , "State capital of California" , "port" .)