If that's what your manager calls it, then that's rather unfortunate. Sbux iced black tea is the English breakfast tea, so it's really an iced English breakfast tea latte with vanilla instead of liquid cane. Might be worth double-checking what other drinks your manager makes/shares incorrectly. Not trying to attack you, but defo your manager 🧐
For additional reference: iced green tea is the jade citrus mint tea, so if anyone ever asks for an iced medicine ball, might as well just make a peach green tea lemonade with honey so you don't have to unnecessarily steep tea bags