Ring after religious ceremony in California (10)
I believe the answer is:
sacramento
'in california' is the definition.
('Sacramento' is part of 'california')
'ring after religious ceremony' is the wordplay.
I cannot really see how this works, but
'ring' could be 'o' (letter resembling a ring) and 'o' is located in the answer.
'ceremony' could be 'sacrament' (sacrament is a kind of ceremony) and 'sacrament' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sacramento that I've seen before include "State capital of California" , "port" , "US city" .)