Hires root beer, with vodka mixed in! They sell this in a can, pre-mixed, at the liquor store. Slightly thinner colour than usual root beer — it’s actually semi-transparent.
It smells like Hires root beer, but with paint thinner mixed in! The flavour is not complex, and it’s a touch sweeter than I would like. Not bad, bad basic. It has an aftertaste of distillation column.
It’s hard to imagine drinking more than a couple of these at a party (think of all the sugar!), but it’s not a bad thing to have in the fridge. If I was designing a root beer alcoholic drink, I would take a “root beer cocktail” approach, like adding root beer extract to a martini. But if you just want to buy a can of something, you could do worse.