Dunkin Donuts has been making frozen coffee for over 30 years. The process begins with fresh coffee beans that are roasted and ground. The coffee is then frozen and packaged in small containers. The coffee is then placed in a water bath that is heated to a specific temperature.
This process causes the coffee to freeze and form a solid block. The frozen coffee is then cut into small pieces and placed in a blender. This process creates a smooth, frozen coffee drink. The final product is then packaged and sold.