Brew coffee. Pour coffee into a large mug and refrigerate overnight. Coffee must be very cold.

In a small bowl, whisk the milk, pumpkin, sweetener of choice, cinnamon, cloves, and nutmeg together until combined. Pour into ice cube tray and allow to freeze.

Once coffee is cold and pumpkin ice cubes are frozen, add everything to your blender and blend on high until smooth and icy. Add more milk if your blender isn't blending well. Taste the frozen drink and add more sweetener or spices, if needed.

Top with whipped cream, if desired. Serve immediately.