What does it mean when a customer asks for extra sweet?

When a customer asks for extra sweet, it typically means they want an increase in the sweetness of their drink. Adding 1 scoop per extra is a standard practice in many coffee shops, including Dutch Bros. This approach provides a consistent increase in sweetness that the customer can expect, ensuring that their drink aligns with their taste preference.

The other options do not accurately reflect the typical meaning of "extra sweet." Doubling the amount of sweetener could lead to an overwhelming sweetness, while creating a new drink would not meet the customer's request for simply enhancing their current order. Reducing sugar content is contrary to the request for extra sweetness. Therefore, adding one scoop per extra aligns perfectly with the customer's desire for a sweeter beverage.