CASTrong Cast Iron Uttapam/ Set Dosa Tawa, 4 Pit,Pre-seasoned, 100% Pure, Toxin-free, Induction, 27.5cm100% NATURAL & TOXIN FREE: The Indus Valley Cast Iron Uttapam Set Dosa Tawa is entirely made from 100% food safe material. It is completely made from pure cast iron without any harmful chemical coatings. Call it the best cast iron uttapam tawa, since this cast iron tawa is a healthier alternative compared to toxin coated non stick cookware. ENRICHES FOOD WITH IRON: The cast iron cookware enriches your food with iron that is really good for health.