Butter keeper, a.k.a butter pot, keeps butter fresh, soft and spreadable for up to 30 days without refrigeration. Say goodbye to torn bread and cold, hard butter clumps! Simply pack a stick of butter into the bell-shaped cradle, add fresh, cold water to the base, and place cradle into the base facing downward. When closed, butter comes in contact with the water to create an airtight seal to keep butter fresh and spreadable. Change out water every 3 days. Made from sturdy, natural ceramic earthenware with a scratch-free glaze. Microwave and dishwasher safe.