Having read the replies to some of the posts by me I thank those who have shared their knowledge with me. I posted an experience I had, trying to clean a stainless steel fry pan. Having a hankering for rhubarb stew one day I used this pan. When I emptied the pan I was amazed at how shiny it had be come. I tried many things to clean this pan, but to no avail. Having said all this, I did a research on what was in the rhubarb that could clean a pan that well. The words oxalic acid came up. Friends this is not body friendly acid. It is the same ingredient that is used in Barkeepers Friend to clean stainless steel. Ironically I too taught of making a cleaner with rhubarb, but alas, always a dollar short and a half hour to late. The guy from Barkeepers Friend beat me to it. As much as I love rhubarb I avoid eating it,but once in a while I cave in for strawberry-rhubarb pie, with ice-cream of course. Something to consider, folks!