"Lid gets tarnished." star star star star star_border I have only had this a couple of weeks and although I love cooking in it I am disappointed that the lid has tarnish and black marks on it which I cannot seem to clean off, this is the only negative I have. Mrs Cross - 01 June 2021 support_agent A note from the team Thanks for your review. We’re delighted you love cooking in the Remoska. Please be assured this is a natural process, you could try wiping the lid whilst it is still warm with a damp cloth and using non- stick scourer, such as the wash up wiz, ref 8904.