Use ketchup to remove the tarnish from copper pans. Slather the pan with ketchup and leave for 30 minutes for the acid to break down the tarnish, then rinse clean and buff with a soft cloth. - See more at: http://www.glamumous.co.uk/2013/03/101-household-tips-for-every-room-in.html#sthash.61AxeCrC.dpuf