Final answer:
Whole milk is the standard option for both Flat Whites and Frappuccinos because it provides a rich and creamy texture, although alternatives like skim milk, almond milk, and soy milk may be offered.
Step-by-step explanation:
The standard milk used for both Flat Whites and Frappuccinos is generally whole milk. This is due to its richness and the creamy texture it provides to these coffee beverages, offering a balance between taste and mouthfeel.
In the case of a Flat White, which originated in Australia and New Zealand, the focus is on creating a velvety consistency with the milk. For a Frappuccino, a blended iced coffee drink developed by Starbucks, the whole milk contributes to the smooth, rich base that is essential for the proper texture of the frozen beverage. Despite this standard, many coffee shops offer alternative milk options like skim milk, almond milk, and soy milk to cater to personal preferences and dietary restrictions. The milk used can be based on customer preference or on dietary needs, but if no specific request is made, baristas typically reach for whole milk. Therefore, understanding the role of milk in these beverages is essential to achieve the desired result in both flavor and texture.