State discovered art by Turner? (6)
I believe the answer is:
lather
'state' is the definition.
(lather is a kind of state)
'art by turner?' is the wordplay.
'art' becomes 'r' (I can't justify this - if you can you should give a lot more credence to this answer).
'by' is a charade indicator (letters next to each other).
'turner?' becomes 'lathe' (a lathe is something which 'turns').
'r' after 'lathe' is 'LATHER'.
'discovered' acts as a link.
Can you help me to learn more?
(Other definitions for lather that I've seen before include "Frothy bubbles from soap" , "Whip up froth - tizzy" , "Soapy froth" , "Froth formed by soap and liquid" , "Foam caused by soap etc" .)