Question: drinks a bartender must know?
Answer: Aperol Spritz. This wine-based Italian cocktail is currently trending here in the United States. ... 
Bloody Mary. A longtime brunch menu staple, the Bloody Mary is the ideal spicy antidote to those who prefer more of a savory sip than sweet. ... 
Cosmopolitan. ... 
Daiquiri. ... 
Dark 'n' Stormy. ... 
Dirty Martini. ... 
Long Island Iced Tea. ... 
Mai Tai.