Not for nothing the bestsellers

The cover I have now since about half a year in use and can say: thumbs up!
In deep plates, which are smaller in diameter than the cover the food every now and then comes to the cover and leaves stains / residues. However, no, that could not remove the washer (also tomato and curry already tried).

The two holes in the middle can be used to lift the hood, with hot liquids coming out here but a lot of hot steam, what you can burn easily. But you know yourself, what you have put under the hood and can according as tackle on the side or top to remove the cover.