If you have a burnt copper bottom pan, there are a few things you can do to clean it. First, use a pot of boiling water to scour the pan. Next, use a stiff brush to scrub the pan until it is clean. Finally, pour a layer of baking soda over the pan and let it sit for 30 minutes. After 30 minutes, scrub the baking soda off with a stiff brush and rinse the pan with hot water. ..