so how many beet do I have to cook to make my own 'rimguard' ?
Seriously, I believe the raw material is a by-product of the sugar beet industry, which is BIG in North Dakota and Manitoba. It's not particularly sweet or sticky, so I would guess that it's the manufacturing waste after the sugar has been extracted. It probably has no real value, until it's been hauled somewhere. The manufacturers probably have to pay to get it hauled away.
Would be fun to show up at a processing plant with an empty carboy and flip 'the guy' a twenty to turn on the spigot.
Might need to be filtered, though. And, I have heard that it 'goes bad' and gets stinky over time, probably from mold growth...
-Paul