Which iced drink contains the most pumps of chai tea concentrate?

The iced drink that contains the most pumps of chai tea concentrate is the Grande iced classic chai tea latte. In a typical preparation, a Grande size is made with a greater volume of chai concentrate compared to smaller sizes.

The classic chai tea latte is made with a specific number of pumps of chai concentrate for each size: usually, the larger the size, the more pumps it incorporates. A Venti iced classic chai tea latte typically contains more chai concentrate than a Tall, but it is not as much as the Grande because the Venti size adjusts the proportions for ice and drink volume in a way that often does not increase the syrup proportionally.

The other option, a Tall iced Teavana green tea latte, does not include chai concentrate, which makes it irrelevant when determining which drink has the most pumps of chai. Thus, the Grande size, being larger and designed to accommodate more concentrate, is the drink that rightly contains the most pumps of chai tea concentrate.