How to Clean Your Copper Jewelry!

I was amazed looking at my son today cleaning his copper jewelry with ketchup.   I couldn't believe my eyes how the ketchup actually cleaned his chain.   He put some ketchup on a paper towel and pass it along his chain, then he washed it out in cool water.  Now I plan to spread the word around.  This is very convenient for people who want to save money and use something they already have in their kitchen.