I remember some ancient discussions here and maybe back at imdb too about Old Rose. And, I do recall once finding a teeny, tiny bit of information about an old, old distillery that was based in Chicago (I seem to recall that part), but that went out of business a really long time ago. I also have a vague memory of folks finding an image online of an old, vintage shot glass with the (real life) Old Rose logo on it. But, for some reason I'm having trouble finding info on it at the moment. I just ran some google and yahoo searches and didn't come up with any hits this time.
As for BetterMost, I always really thought it was made up. But, I'd love to be proven wrong!