This one might not be a fun drink in the traditional sense but I still found it way too interesting to just leave out! When I visited Tokyo, you could buy these bottles of hot water at almost any vending machine and certainly at every convenience store. It was actually perfect since I had gotten sick on my second day of the trip and the hot water helped reduce my throat ache. Perhaps it's my asian side shining through but even normally I prefer drinking water hot now, so I do wish that they would sell this here in Germany as well. But I suppose that preparing a thermo flask filled with hot water at home is more environmentally friendly than buying a plastic bottle anyways. 7/10.