How do you input a custom drink order into the register?

When inputting a custom drink order into the register, the correct approach is to select the base drink first. This step is crucial because it sets the foundation for the customization process. After selecting the base drink, you can then add specific options such as syrups, milk types, and various toppings. This method ensures that all modifications are properly linked to the original drink choice, allowing for a complete and accurate order that reflects the customer's preferences.

Choosing a pre-defined drink from the menu does not allow for customization, which is why it is not the correct method for entering a custom drink order. Similarly, entering the order manually without base selections bypasses the structured process of creating a drink, leading to potential errors. Scanning a customer’s order slip might streamline some orders but does not facilitate the necessary customization steps for a unique drink order.