1, the Ice bucket needs to add water and ice to operate, and the amount of water and ice should be approximately equal. Add 300 to 600g ice when the bottle is cooled by placing it in an ice bucket. It is recommended to add a 300g amount in winter and to add 600g in the summer.
2, add tap water (cold water) to bottle bottleneck position. But make sure the highest plane position of water is 6 centimeters away from the ice bucket.