If you look at the gin rickey and think it's nothing but a gin and tonic without tonic's bittersweet bite, you'd be mostly correct. Dismiss it as a G&T wannabe, however, and you're missing out on one of the great joys of summer. Created in a Washington, D.C., bar called Shoemaker's during an especially brutal heat wave in the 1890s--before the advent of air conditioning, you'll note--the gin rickey is like an effervescent Frigidaire. Refreshingly bubbly and pleasantly bitter, this Gilded Age cooler demonstrates how your great-grandparents made it through the summer alive.