A beverage nucleator system for a supercooled beverage container may include a frame for receiving a beverage container and an ultrasonic device positioned therein. The frame may include a beverage container aperture therein sized to allow direct contact between an ultrasonic transmitter coupled to the ultrasonic device and a closure on the container. The ultrasonic transmitter may operate at a 28 kHz frequency with a power of 5 W for 1-5 seconds. The beverage nucleator system can operate without requiring a fluid or gel transmission medium.