Question: what drinks do bartenders need to know?
Answer: Long Island Iced Tea. One of the most famous cocktails, therefore essential for every bartender to be familiar with. ... 
Martini. Martini is probably the most famous “posh” cocktails, loved in high-end venues. ... 
Mojito. ... 
Old Fashioned. ... 
Piña Colada. ... 
Negroni. ... 
Sex on the Beach. ... 
Black Russian.