My wife does the cooking, we just bought a brand new oven. It's GE electric glass cooktop and we bought a set of cuisenart, stainless steel pots, and pans. Her first meal cooked on this sucker was Pasta, she filled the pot with water, put the pasta and boiled it. I found the pot in the sink this morning. I don't know if she had cleaned it out but I took a little soap and a scrubdaddy and cleaned it out. When it drieD, it looked like this picture. Why does it look that way? Did she do something wrong letting it sit overnight? How are we supposed to clean it? This pot was brand new and used exactly one time.