What is the main ingredient used to muddle in a Mojito?

In a Mojito, the main ingredient that is muddled is the mint sprigs. Muddling mint is crucial because it releases the essential oils and aromatic compounds of the mint, which are key to achieving the refreshing flavor characteristic of this cocktail. The process of muddling gently breaks down the leaves, allowing their flavor to infuse into the drink.

While other ingredients, such as sugar cubes and lime wedges, are also used in a Mojito, they are not the primary focus when it comes to muddling. The sugar may be dissolved in the liquid rather than muddled, and while lime wedges contribute acidity and flavor, their primary function is to provide tartness rather than the herbal quality imparted by the mint. Rum is the spirit base of the cocktail and is added after the other ingredients have been muddled, serving as a complement to the muddled mint and lime.