You can’t serve a Cosmo in a regular tumbler. That is a sin. It demands a martini glass—the one with the long stem that makes you feel like a million bucks even if you’re drinking it in sweatpants. The wide rim lets the aroma hit your nose before the vodka hits your soul.
The Ultimate Cosmopolitan Cocktail Recipe Guide (How to Make the
Now, for the garnish, you’ve got options. The classic is a flamed orange peel (just a twist of zest, no fruit pulp). Some bars use a lime wheel, which is fine, but lazy. If you see a maraschino cherry floating in there, run. That’s a sign of a bartender who gave up.