Brew your coffee and allow it to cool.
In a blender, combine the cooled coffee, milk, and sugar.
Add the ice cubes to the blender.
Blend on high until the mixture is frothy and smooth.
Taste the mixture and adjust sweetness if desired.
Pour the frappe into two tall glasses.
Top each glass with a generous dollop of whipped cream.
Drizzle with cocoa powder or chocolate syrup for garnish.
Optional: Add a sprig of mint for freshness.
Serve immediately and enjoy your homemade frappe!