Zenn, you can keep the fu zhu yi mi refridgerated for 1 day but got to finish it by then. Can't keep too long else the taste will become weird.
Aqua, for those to travel out with BBs, the tall slim type of flask should suffice right? For our normal drinking, like red date tea, jsut buy the 1-litre thermal flask should be aequate, right? Then what about those huge flasks (dunno flasks or airpots) that store water, and can preset to 60 degrees for making milk? Need to get one also, right?