RECOVERY WITHOUT POWER
Control column forward to un-stall the wings. As the speed increases ease out of the dive. Emphasize that if a wing drops, rudder is used to prevent yaw into the direction of the lowered wing. The wing is raised with aileron when it is un-stalled.
RECOVERY WITH POWER
Brief the student that the recovery using power is similar to that when no power is used with the addition that full power is applied at the commencement of recovery. Point out that you will be demonstrating that use of power results in recovery being made with a much decreased height loss compared with the recovery without use of power. It is important to stress that power, if used too late, i.e. when the nose of the aeroplane has dropped below the horizon, will result in an increased loss of height. Stress that the recovery using power is the normal method of recovering from a stalled condition of flight.
Straight from the CASA Flight Instructor Manual.