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 flavorful drinks like Mojitos and Old Fashioneds. Using a muddler involves pressing down on the ingredients in the bottom of a glass, allowing the essential oils and juices to mix with other components of the cocktail. This technique enhances the overall taste and experience of the drink, making it a vital tool for bartenders and cocktail enthusiasts alike.