I've thought of a list of beverages I miss from places I've been: karkade (iced, from Egypt), horchata de chufa (in Barcelona), ribena light (2-for-1 from Boots), pocari sweat (Japan), shay bi na'na' (the desert, mostly Dahab), tinto de verano (from Inopia), lager shandy (in England made with real lemonade and not Sprite). There must be more I'm not thinking of.
"Observe Everything. Always think for yourself. Never let other people make important decisions for you." — from Bad News by Edward St. Aubyn