There is some unpalatable concoction served as "sweet tea" in various chain sit-down restaurants in the greater deep south area that I assume either uses some non-sugar sweetener or some instant tea mix. I now order unsweetened iced tea, and add sugar to taste. see also: "If this is tea bring me coffee, and if it is coffee bring me tea." https://quoteinvestigator.com/2015/11/11/coffee-tea/