The former barista notes that while their Starbucks location didn't serve trenta drinks, it certainly gets at least seven pumps. That means of the 31 ounces of iced coffee or tea in the cup ...

The trenta cup size was introduced to the Starbucks ... Today, a trenta can only be ordered for specific iced drinks, such as iced coffee, iced tea, and Starbucks Refreshers.

If you think a venti is the largest size cup on Starbucks' menu ... You can only order a trenta for cold drinks, specifically iced teas, iced coffee, cold brew, and Refreshers.