I agree with everyone else and will add this. given enough power a quick blip (lower then back to where you were quickly) of the throttle will also start the torque roll, it's tricky to do and still maintain control as you'll need to backoff and reapply the rudder also and at the same time. Planes with nice big props tend to get to rolling all on their own and can really get rolling pretty fast

Now in full scale, blipping the throttle would be a huge no-no but in RC it works