John, that juicy flask looks like a polished bottle. Flawless mint shiny wet polished looking. I need my welding goggles stuck to my face just to stare directly at it, it is so shiny. OMG.
You should take a worthless bottle that has stains and toss it in the river to see if it will clean it. I think I'll try a little experiment myself. I wouldn't mind leaving a bottle in the river for a year if it will come out looking as nice as that flask.