Final answer:
For a drink requiring heavy whipping cream, the correct amount of cream to use is 1oz, as per the given standard measure.
Step-by-step explanation:
When preparing a drink that requires heavy whipping cream, it is important to follow the prescribed standard measures for consistency and quality. According to the reminder provided, for drinks with heavy whipping cream, you should use 1oz of cream. This quantity is the standard amount, regardless of whether a customer may request light, regular, or extra cream for other types of drinks.
In this case, since the customer is asking for heavy whipping cream, you would use 1oz.