Stolen china cooking vessel at church jumble (10)
I believe the answer is:
hotchpotch
'jumble' is the definition.
(I've seen this before)
'stolen china cooking vessel at church' is the wordplay.
'stolen' becomes 'hot' (stolen goods are 'hot').
'china' becomes 'ch'.
'cooking vessel' becomes 'pot' (I've seen this before).
'at' is a charade indicator (letters next to each other).
'church' becomes 'ch' (abbreviation on maps etc).
'hot'+'ch'+'pot'+'ch'='HOTCHPOTCH'
(Other definitions for hotchpotch that I've seen before include "Confused medley" , "confusion" , "Traditional stew" , "Mutton stew" , "jumble" .)