Originally Posted by kitchengoddess8
Good to know! The tan discoloration was on the outside of the pan, and I didnít use any oil. I've been using it for boiling eggs. Could it be a heat issue? The gas went off in my building and I've been using a Salton electric burner on medium heat.
It's a deposit of some kind. A brown film as you described usually indicates some kind of fat (oil, butter, lard) was baked onto the surface. It often happens when a pan is in the oven as vaporized fat settles on the pan and the oven heat bakes it on, similar to how you season a cast iron skillet. It can also happen when you pan fry meat/poultry/fish.