Which frappuccino flavor has the highest number of scoops of matcha powder?

The Venti Green Tea Frappuccino contains the highest number of scoops of matcha powder because it is the largest size among the options provided. Starbucks sizes are designed so that each increase in size corresponds to an increase in the ingredients, including matcha powder for this particular drink.

In the case of the Green Tea Frappuccino, each size—Tall, Grande, and Venti—has a different number of scoops where the Venti typically has one more scoop than the Grande and Tall sizes, resulting in a richer matcha flavor. Therefore, since the Venti is larger than both the Tall and Grande sizes, it logically follows that it has the highest number of scoops of matcha powder. The Grande Vanilla Bean Frappuccino, while delicious, does not contain matcha powder at all, making it not applicable in this context.