The Calcutta Cosmo is a vibrant and fruity cocktail that is a favorite among cocktail enthusiasts in Kolkata. It is made with vodka, cranberry juice, lime juice, and a splash of orange liqueur. The cocktail is shaken with ice and strained into a chilled martini glass, garnished with a twist of lime. The Calcutta Cosmo is a perfect choice for those who enjoy a sweet and tangy cocktail with a hint of citrus.