What is the main difference between the Tall and Grande Eggnog Frappuccinos?

The primary distinction between the Tall and Grande Eggnog Frappuccinos lies in the amount of frapp roast used in each size. The Tall size contains less frapp roast compared to the Grande size. This affects the overall flavor intensity and caffeine content of the drink.

In Starbucks beverages, size changes often lead to variations in the amounts of ingredients. For Frappuccinos, this typically means adjusting components like frapp roast, milk, or ice, all of which contribute to the drink's texture and taste. However, in the case of the Eggnog Frappuccino specifically, the frapp roast plays a crucial role in balancing the sweetness and richness of the eggnog flavor, which is particularly important given the festive nature of this beverage.

By choosing the correct answer, one acknowledges how ingredient proportions shift with size variations, which is key to understanding the crafting of Starbucks beverages.