What key ingredient differs in the medium and large sizes of a Horchata Freez/Frappe?

In a Horchata Freez/Frappe, the primary ingredient that varies between the medium and large sizes is the amount of caramel sauce. This variation helps to adjust the sweetness and flavor intensity based on the size of the drink.

For larger beverages, it is common to increase the amount of certain ingredients, such as sugary sauces, to ensure a balanced taste throughout the larger volume. Caramel sauce plays a significant role in adding richness and complexity to the drink, enhancing its overall flavor profile.

The other ingredients, such as cinnamon syrup and white chocolate sauce, typically remain consistent across different sizes to maintain the intended flavor balance. Thus, the differing quantity of caramel sauce is the key factor that distinguishes the medium from the large size of the Horchata Freez/Frappe.