While making a pot of coffee with the alcohol-laced water, Stan notices it has “a funny color”, but Ollie tastes it and explains that all mountain water is like that. "It's the iron in it", he says, "it's good for your nerves."
Stan notices the coffee has an unusual color when brewing it with tainted water containing alcohol. Ollie states that mountain water usually has this same discoloration, and attributes it to the presence of iron, which is said to have a positive effect on nerves.