What ingredient is used to make a frozen Dunkaccino?

The ingredient that is used to make a frozen Dunkaccino is coffee. This beverage is essentially a blended coffee drink that combines ice with coffee, resulting in a refreshing and creamy texture. The coffee base provides the characteristic flavor and caffeine content typical of Dunkin's coffee beverages. The other ingredients, such as syrups or milk, are typically added for flavor and texture but are not the primary ingredient that defines the frozen Dunkaccino. Coffee is central to its identity as a coffee drink and is what distinguishes it from other frozen beverages.