Cleaning Copper with Vinegar & Salt 1 Tablespoon of Salt + 1 Cup Vinegar Dampen a soft cloth with vinegar, then dip a finger tip of the cloth into the salt. Rub the mixture onto the object until clean of tarnish. RINSE WELL. Click this pic for 7 Ways To Clean Copper. Other recipes are also found here: Paste adding flour or Lemon Juice w cream of Tartar~ http://www.doityourself.com/stry/copper Saltwater + Vinegar~ http://www.instructables.com/id/Cleaning-copper-with-saltwater-and-vinegar/
Super easy DIY copper and brass cleaner. 6 TBS salt, 6 TBS flour, and several TBS white vinegar. Mix flour and salt then add TBS's vinegar until you have a paste. Rub on with a soft cloth then rinse and dry. Ta-Da! Clean copper and brass without harsh chemicals!