Basically, I line a large cooking pot with aluminum foil. You can also line the bottom of a sink. I then place my item to be polished in the pot. In this particular case, it was my tarnished silver plated footed bowls. See below.
See how black they are?
I then take another pot and boil water. I pour 1/4 cup of baking soda and a couple of teaspoons of salt into the boiling water. I then pour the boiling water (with baking soda) mix over the silver item and cover it with a tight fitted lid. This is when the chemical reaction happens (aluminum foil, baking soda and salt). I let it soak 5 minutes and then remove. I rinse with water and rub dry with a microfiber cloth.
And, viola! Aren't they so pretty and shiny?? So easy and quick to do!