Paul Fairie recently stumbled across bizarre advertisements for a drink called Cronk in an 1883 issue of the Calgary Herald. (“Cronk. Buy Cronk. Cronk is the drink.”) The rabbit hole that opened up in the wake of that discovery is summarized in his 16-minute video above, which tries to reconstruct the history of Cronk: what was it, what were its ingredients, who invented it, and how did those weirdo ads end up in the Calgary Herald? (More from CBC News.)