Put all the ingredients in a blender, and blend everything together.
Add a little whipped cream on top (optional), and sprinkle with matcha.
Note: If you measure out two cups with the ice and milk combined, you can make a thicker, more concentrated version.
Story Behind this Recipe
I asked a Starbucks employee for the ingredients, and then I tried throwing it all together in a blender. It's healthier when made with soy milk.
If you blend milk, sugar and and some other ingredients of your own choosing and top with whipped cream, you can make your own original Starbucks frappuccino. The Starbucks employee told me that they make theirs with milk, sugar, matcha powder (from Kyoto), and vanilla syrup. They sell vanilla syrup at Starbucks, so perhaps you could buy that?