What is the best way to get stains out of a white cast iron sink?

http://www.thriftyfun.com/Removing-Stains-from-a-Porcelain-Sink.html

Bar Keeper's Friend works great. I also use Clorox Cleanup for in between scrubs. I'm sure there is a way to reseal them so they don't absorb stains, but we are thinking of doing a farmhouse sink, so we haven't put that effort into it yet

I use Commercial Scrub Free w/bleach once a month and Bob Ami in between.

Works great!

: )

snow bowl works well

Thanks for the suggestions!

Yes - just make sure you rinse well with cold water.. I do mine all the time...

i use hydrogen peroxide on my beige carpet, so I'm sure it would be fine on your sink. Just rinse well as letting it stand for a long period of time. Maybe even deluded bleach might work.