Dampen a cellulose sponge with water and wring it out.
Apply a thick layer of silver polishing cream to the sponge and wipe the inside of the teapot to remove any stains. Use a cotton swab dipped in silver polishing cream to clean the spout or small areas.
Rinse the teapot thoroughly with warm water to remove any cleaning residue.
Dry the teapot inside and out with a soft, clean towel.
Fill the teapot with warm water. Add a 5-minute denture cleaning tablet for every 2 cups of water and allow it to sit for 10 minutes.
Pour out the solution and rinse the teapot with warm water. Gently scrub any remaining stains with a damp soft-bristled brush.
Rinse the teapot thoroughly with warm water and dry it inside and out with a soft, clean towel.