Step 1

Place the coffee, sugar, and 2 tablespoons cold water in a shaker, jar, blender, or drink mixer. Cover and shake well for about 30 seconds, or, if using a blender, drink mixer, or handheld frother, mix for 15 seconds until you have a thick foam.

Step 2

Toss a few ice cubes in a tall glass. Slowly pour the foamy coffee mixture into the glass. Fill the glass with water, adding milk if desired. Serve the frappe immediately. Originally published July 28, 2009.