Ways To Clean Copper:

Copper generally gets oxidized or tarnishes as a natural phenomenon.  Hence a quick glance at the cleaning ways might help you to maintain Copper products well. 

1.   Pitambari Powder is the best and traditional way to clean the copper items.
   
   
2.   Vinegar with a combination of Salt can be applied and cleaned or otherwise the copper product that is to be cleaned can be immersed in a solution of Vinegar and salt in boiling water.
   
   
3.   Lemon and salt mixed together can be rubbed to clean the product and salt can also be replaced with Baking Soda.

Keep it gleaming by polishing it:

Left alone, copper naturally tarnishes over time. To polish it, regularly apply a specialty copper cleaner or a homemade mixture of lemon juice and baking soda, vinegar and salt, or lemon and salt.