I had heard the Russians did this. I had also heard horror stories of it exploding and being dangerous. I stay away from risky business. Then I learned my friend Angelina makes caramel with this method. She'd never heard about such explosive ridiculousness. I listen to her. She's a good one to listen to. I got brave. This is my second time doing this and it's worked beautifully both times! And oh-so-easy!
It's VERY IMPORTANT that you make sure the water doesn't boil dry. I set the timer for every half hour to check on it and add water if I needed to. And you will need to!
I add a little salt to mine. Salted caramel? Yes please!!