How should a 16 oz latte with one shot and soy be called out?

The correct way to call out a 16 oz latte with one shot and soy is "Tall single shot, soy." In the context of coffee shop terminology, a 16 oz drink is typically referred to as a tall in many coffee establishments, including Biggby Coffee. The term "single shot" specifies the number of espresso shots in the drink, while "soy" indicates the type of milk used. This terminology is clear and concise, allowing baristas to quickly understand how to prepare the drink according to the customer's preferences.

The other options don't accurately reflect standard terminology or the specifics of the drink size and composition. Therefore, referring to the drink as "tall" correctly utilizes the language commonly used in coffee shops, ensuring effective communication on order preparation.