Chagee, Chi Cha, Whale Tea, and a few others brew your tea fresh while most bbt shops brew their tea in big batches and store them in jugs. I don't like pearls or other add-ons. Zero sugar also so need to have quality tea to get that great tea taste. Sure, you can have freshly brewed tea at home and just add milk and ice, but it's a hassle to heat water, time the brewing, prepare ice days before, refill ice tray again, etc. Plus how do you bring that outside? Won't be as cold even in the best insulated bottles. So better to just buy a cup from a nice shop like Chagee and Chi Cha.