Put the Bag of salt item of choice on your quick use item and select it but don't use it. Open up your menu and go to your end game option select end game and before the screen fades to black you have a second or so to do anything before the main menu pop's up use the item and you'll be granted the salt it awards and upon loading the character back up you'll have the gained salt and still have the bag item. This also works if you decide to make a new character and have a far progressed character simply log on the character with the high level salt item and perform the glitch and instead of loading up that character load up your new one to be granted the salt on that character instead.