Rye whisky and bitters, sugar and soda, ice and a glass. That's all you'll need to create a perfect Old-Fashioned, the world's oldest living cocktail (as rumor has it, an Old-Fashioned-esque recipe was the first to earn the term.)

You can swap the rye for bourbon, if you so desire, but don't bother muddling any fruit -- according to cocktail historian Dave Wondrich, that's a mask-the-bad-liquor practice from the days of Prohibition.