The JBK ceramic Pot Minder will help prevent pots from boiling over when cooking. Simply place the Pot Minder in the bottom of the pot when cooking or warming pasta, soups, vegetables, or milk. Before the water or milk begins to boil, the JBK Pot Minder begins to chatter in the bottom of the pot. Even if the heat isn't turned down immediately, the Pot Minder modifies the formation, size and number of bubbles rising from the bottom of the pot and greatly assists in preventing those messy boil overs.