T Chef Series Pure Cookware is a high quality cookware range that cooks with a minimum amount of water. With the objective of providing users with a health-conscious way of cooking, a valve system with three different positions was developed: the open position allows steam to escape without splashing, the closed position keeps the steam inside and supports cooking at low temperatures, and the whistle position gives an audible signal when the water is boiling. The lid can be hooked onto any place of the rim in an upright position. In addition, measurement marks can be found on the inside of the cookware.