Cocktails in The Big Bang Theory

Cuba Libre

Season 1, Episode 8, “The Grasshopper Experiment” (2008) · Sheldon Cooper (served by Penny)

Practising for a bartending shift, Penny makes the guys order cocktails; Sheldon asks for a virgin (diet) Cuba Libre, and later at the bar Penny secretly adds rum, which gets him singing.

“Fine, I'll have a virgin Cuba Libre.”

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Sources: Wikiquote - The Big Bang Theory (season 1), 'The Grasshopper Experiment'; Miss Charming (Cheryl Charming) - Cocktails in Television

Grasshopper

Season 1, Episode 8, “The Grasshopper Experiment” (2008) · Raj Koothrappali

While Penny practises bartending on the guys, Raj drinks a Grasshopper and finds that alcohol lets him talk to women; he drinks another on his arranged date at Penny's bar.

Sources: /Film: Kunal Nayyar's 5 Favorite The Big Bang Theory Episodes; TBS: Kunal Nayyar chooses his favorite Big Bang Theory episodes; Miss Charming (Cheryl Charming) - Cocktails in Television