A muddler is a bar tool used primarily in cocktail preparation. It is designed to crush or mash ingredients, such as fruits, herbs, or spices, to release their flavors and aromas. Typically made of wood, plastic, or stainless steel, a muddler helps create well-balanced drinks by ensuring that the flavors are fully integrated. In cocktails like a Mojito or a Old Fashioned, the muddler plays a crucial role. By gently pressing down on the ingredients, bartenders can enhance the drink's taste and aroma, making it more enjoyable. Proper muddling technique is essential to avoid over-mashing, which can lead to bitterness.