These balls reduce heat and water loss when using existing cooking vessels without a lid. Use of steam trapping balls from fusionchef by Julabo is highly recommended when cooking in your own vessel without a cover. If the entire surface of the water is covered with these floating polypropylene balls, loss of heat and water from evaporation will be significantly reduced. Secondly, the effects of odors and light are minimized.

Steam Trapping Balls (1000 pieces, 20 mm dia.)