The cocktail in question is the famous Mojito. It is a refreshing drink that originated in Cuba and has now become a popular cocktail all over the world. The combination of white rum, sugar, and lime juice creates a deliciously sweet and sour taste, while the soda water adds a sparkling finish. The mint gives the Mojito a refreshing and aromatic touch, making it the perfect cocktail for a hot summer day. It is typically served over ice and garnished with a sprig of mint and a fresh lime wedge.