A kitchen tawa is made to last for years, used almost every day to make rotis, parathas, dosas and chillas. But how do you know when your trusted cooking utensil has reached the end of its life? Sometimes, your food may give you the first clue.

“When it comes to replacing the kitchen tawa, your rotis often tell you before your eyes do,” said Kanikka Malhotra, dietitian and certified diabetes educator.

If you use a non-stick tawa, look for deep scratches that expose the grey metal underneath, peeling or bubbling coating, and food that sticks even when you use oil. Dark patches that refuse to wash off are another warning sign.

For any type of tawa, check whether the base has warped. Place it on a flat surface and press the edges.…