The Indus Valley Premium Thick Cast Iron Cookware Set - Kadai(wok model) + Tawa - is 100% natural and toxin-free. Truly a healthier alternative to non-stick cookware that has chemical coating. Stop worrying about your daily iron-intake with the cast iron cookware combo. Because cast iron is known to add iron to food which is really good for your health. Cast iron also enhances food taste by adding a distinct flavour to it. Thus make restaurant-like dishes right at your home!