The Pot Minder Ceramic Disc, 2 in. is designed to prevent the unpleasant experience of pots boiling over on the stove. Even a brief moment of distraction can lead to a pot boiling over, causing sizzling sounds or a burning smell in the kitchen. Drawing on centuries-old kitchen wisdom, JBK has created an effective anti boil over disk. The Pot Minder starts to chatter at the bottom of the pot just before the water or milk reaches boiling point. This action changes the formation, size, and number of bubbles rising from the pot’s bottom, helping to prevent messy boil overs, even if the heat isn’t immediately reduced. Model Number: