What additional ingredient is crucial to the flavor of Mojitos?

The crucial ingredient that adds unique flavor to Mojitos is mint. Mint provides a refreshing, aromatic quality that is essential to the cocktail's signature taste. The fresh leaves are muddled with other ingredients, allowing their oils to infuse the drink with a vibrant, herbal note that elevates the overall flavor profile.

While sugar adds sweetness, rum is the base spirit, and cherries may complement other cocktails, they do not capture the essence of a Mojito like mint does. The combination of mint, lime, rum, and sugar creates the iconic balance that makes the Mojito a favorite among cocktail enthusiasts. Thus, the inclusion of mint is what distinguishes this drink and makes it particularly refreshing and enjoyable.