The Acidity Helps Polish Jewelry
If you’re interested in a chemical-free way to restore tarnished jewelry, try soaking it in spoiled milk! The dairy beverage gets more acidic as it goes bad.
The result is a liquid that’s tough on grime but not too abrasive for jewelry. To implement this technique, simply soak your jewelry in the spoiled milk for 30 minutes. Afterward, rinse the items with dish detergent and dry them with a soft towel to reveal the shiny results.