What is a shared step in the preparation of both the Grande and Venti Green Tea Frappuccinos?

In the preparation of both the Grande and Venti Green Tea Frappuccinos, a shared step is the use of matcha powder. Matcha is a finely ground powder made from specially grown green tea leaves, and it is a key ingredient that imparts the distinct green tea flavor to the frappuccino. This essential component contributes to the beverage's signature taste and vibrant color. Regardless of the size, both the Grande and Venti versions utilize the same quantity of matcha powder as part of the recipe, ensuring consistency in flavor across these larger sizes.

In contrast, other elements like classic syrup or whipped cream are not foundational to the green tea frappuccino itself and may vary in usage depending on customer preferences. The frapp roast is specific to coffee-based frappuccinos and does not apply to the green tea variant. Thus, matcha powder stands out as the crucial shared ingredient in both the Grande and Venti sizes.