[thesuitonym]

Actually, in English, Chai does not mean tea, it means a specific flavor of tea. If you don't believe me, try ordering some Earl Grey Chai, see what happens.

[adi_kurian]

https://www.google.com/maps/search/england+chai+london/

[zhengyi13]

If your server is Indian, they'll likely react positively, and get you what you want.

[pphysch]

Sure, but "chai tea" is still redundant. I have never used that term and ordered chai in many places without confusion.

[genewitch]

it's redundant at a place that serves chai, but it isn't redundant at a place that does not serve chai, because you're skipping the "what is chai" question from whoever you're querying.

[thesuitonym]

It's redundant in the same way Earl Grey tea is redundant, though.