My countertop is a solid off-white material. Its finish is matte, not glossy, and because it has wood trim around the edge it's hard so get a side view - however, there is one point at which two pieces of the material are joined. It appears to be some sort of laminate or melamine. but I'm far from an expert here - these countertops were here when I bought the house.
I would like to know what material the countertops are made of, how heat resistant they are, and how to clean it. There is a place (which I've covered with a drying mat) where some mug rings have stained the countertop. My guess is that it's due to heat. I don't remember whether the rings were here when I came, or whether they appeared later - they have been there for years. Is it possible to fix this, and if so, how? So far the only recommendation I've read is to try carefully scrubbing with a magic eraser or melamine foam, but I want to make sure I know what I'm doing first.