Ice cream snow !!??

I saw this link on another blog by a woman called piper terret. She writes a blog called the frugal life and it is extreamly good.

The link is actually to the times, and discusses taking snow off of the fence adding milk, sugar and vanilla to make snow ice cream, i would not think to do this as i would be concerned for the safety of it but it has had surprisingly good feedback if you scroll down to the comments.

http://timesonline.typepad.com/alphamummy/2009/02/how-to-make-sno.html

I wonder if you could link this to the concept of added vitamins to harvested water. For example so if yo are anemic you could add iron to your water out of the tap so you dont need to remeber to take tablets etc.