Name one type of cocktail that is served blended.

A Frozen Margarita is a type of cocktail that is served blended. The blending process involves mixing together ingredients like tequila, lime juice, and triple sec with ice to create a slushy, icy texture that is characteristic of this drink. This method not only chills the cocktail but also incorporates air into the mix, resulting in a refreshing and easily drinkable beverage, particularly enjoyed during warm weather or in tropical climates.

In contrast, cocktails like the Martini, Manhattan, and Negroni are typically prepared through shaking or stirring methods, which focus on combining the ingredients smoothly without the incorporation of ice in a blended form. These traditional techniques highlight the distinct flavors of the spirits and are served in a more straightforward, chilled manner rather than achieving the frosty, blended consistency found in a Frozen Margarita.