This milk frother is a must-have for coffee lovers. With the Primula Milk Frother, it has never been easier to get that coffee shop feel right at home. Fill one-third of a mug or glass with your choice of milk and leave enough room for the milk to expand to about twice its volume. Insert frother coil into milk and turn frother on. Slowly move the frother coil around the bottom of the mug or glass until the milk begins to expand. Slowly raise the frother coil up so that is always just under the top of the frother. After 15-30 seconds, the milk will froth to more than twice its volume. Turn off the frother before removing it from frothed milk. Pour coffee slowly into the frothed milk and enjoy!