How to clean a pot: I live in a house with particularly hard tap water, which means most of my stainless steel pots and pans develop white spots that are not easily washed away. This can also happen with pots that are used often to boil water. The cloudy residue is stubborn, but here is a trick. Clean the pot with a little bit of vinegar and warm water, instead of just water, and those spots should wash away fairly easily.
Michelle Stark, Times food editor