To remove tarnish from a silver plate, place the silverware into an aluminum pan then sprinkle 1 cup of baking soda over it. Pour enough boiling water to cover the plate, then let it soak for five minutes. Buff and dry the plate using a cloth once the tarnish disappears.
An enamel pan that is lined with aluminum foil can be used as a substitute if an adequately sized aluminum pan is not available. The aluminum foil is essential because this method depends on a chemical reaction between the tarnished silver and the metal.
Alternatively, use your finger to apply a dab of toothpaste on the tarnished silver surface, rinse the plate, and then buff and dry with a clean cloth. Use a clean, soft-bristled toothbrush and a gentle touch to scrub silver pieces that have intricate details.
For excessively tarnished silver, use a combination of more than one treatment to remove the stain completely. Soak the silver in an aluminum pan with boiling water, salt and baking soda. Reheat the solution once it becomes cold to perform multiple treatments or remove the silver plate from the bath, dry it, then apply toothpaste and buff it with a clean cloth.