KTSP30 - Made of 12-element surgical stainless steel, this highly polished large stock pot lets you steam cook with minimum water. Let food start to cook on medium heat, then, when the valve starts to whistle, push the lever until the word CLOSED appears. Turn the heat down to low and let the cooking process continue. This will help retain taste and valuable nutrients. This also eliminates the need for grease or oil in cooking. The steamer basket will hold a colorful bouquet of vegetables or fish for steaming. Limited lifetime warranty.