Carry to excess (6)
I believe the answer is:
overdo
'carry to excess' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for overdo that I've seen before include "Be excessive in action or cooking" , "Use to excess" , "Be excessive, perhaps in cooking food" , "Cook too long or act excessively" , "Maybe burn" .)