Violent act, a bit like pancake mix? (7)
I believe the answer is:
battery
This clue is a double definition.
'violent act' is the first definition.
(beating somebody up)
'a bit like pancake mix?' is the second definition.
(like pancake batter)
(Other definitions for battery that I've seen before include "Power source; artillery unit" , "criminal offence" , "Device that converts chemical energy into electrical energy" , "associated with assault" , "Personal attack" .)