Calcium and lime deposit stains on the insides of coffeepots and tea kettles are among the most stubborn things to clean. Getting a sponge or scrubby brush inside can be next to impossible, so try this nontoxic solution instead. Simply fill the pot with equal parts very hot water and vinegar, and let it sit overnight. The mild acid in the vinegar will break down the deposits. Thoroughly rinse it out the next morning and your coffeepot or tea kettle will look as good as new.
ANDREWS MCMEEL SYNDICATION