This is non-stick korai with a lid. It is made of granite and has a glass lid. Here are some tips for using a non-stick korai:

Use low or medium heat. High heat can damage the non-stick coating.
Use a little oil or butter. Even though it’s non-stick, a little bit of fat can help prevent sticking, especially when searing food.
Don’t use metal utensils. Metal utensils can scratch the non-stick coating. Use silicone or wooden utensils instead.
Let the pan cool before cleaning. Don’t plunge a hot pan into cold water. This can also damage the coating.
Here are some additional tips to extend the life of your non-stick korai:

Avoid preheating the pan for extended periods.
Hand-wash your non-stick korai whenever possible. Dishwashers can be harsh on non-stick coatings.
If food does stick, don’t scrub it off with a metal utensil. Soak the pan in warm, soapy water for a while. The food should then come loose easily