What determines the volume of milk to add in an Iced Coffee if cream is included?

The volume of milk added to an Iced Coffee when cream is included is determined by filling the cup to the middle line with coffee. This measurement balances the ratio of coffee to cream, ensuring a well-blended beverage without overpowering flavors. By filling to the middle line, the drink achieves the right consistency and taste, allowing the cream to enhance the flavor without making it too rich or heavy.

In this context, using the other lines would result in different proportions of coffee and cream, which could adversely affect the overall flavor profile. For instance, filling to the top line would likely lead to an overly strong coffee taste, while filling to the bottom line would not accommodate enough coffee flavor for the cream to balance out. Therefore, the middle line represents the ideal compromise for a well-rounded Iced Coffee with cream.