Although there are a number of commercial products available for stainless, good ole white vinegar works just fine in a spray bottle. Mist lightly and wipe dry with a soft towel in the direction of the grain. I would avoid the use of oil based cleaners and polishes as they will leave a film that attracts dirt. Stubborn stains may require the use of a scotch brite pad but again rub only in the direction of the grain but understand the grain will look different when finished.
Don
