Tarnished silver is no match for this aluminum foil "recipe." Bring 1 liter of water, 1 tbsp of baking soda and one piece of aluminum foil to a boil. Drop your silverware in the pot for 10 seconds (longer if it's extra tarnished), then fish it out with tongs. Magic! You can also ball up foil and use it to scrub off caked-on food from pans (not non-stick ones).