Ever growing green onion

We love green onions around here. They are so good on so many things! A friend of mine had mentioned to me once that if you take the bottom of a green onion after you use it and put it in water that it will grow back. Of course I was skeptical, as was my husband when I told him as well. So of course we had to start our science experiment. To our excitement after a couple days we had more green onion! In the past few months I have only bout new green onions I think one time and it was because the water got kind of slimy and I had to throw out what I had. So a note to myself and others doing this... Keep the bottom of the onion and the water clean and you'll almost never have to buy green onions again! Plus they look super pretty sitting up in my kitchen :)