Brew the Coffee:Brew a strong cup of coffee or a shot of espresso and let it cool down to room temperature, or chill it in the fridge to speed up the process.
Blend the Frappe:In a blender, combine the cooled coffee, milk, sugar (if using), and ice cubes. Blend on high speed until smooth and frothy.
Serve:Pour the frappe into a tall glass. If desired, top with whipped cream and garnish with a drizzle of chocolate syrup or a sprinkle of cocoa powder for an extra indulgent touch.
Enjoy:Stir before drinking, and enjoy your homemade iced coffee frappe!