Cold mornings call for a proper flask, and I've been thinking about this more than anyone probably should. There's a real split out there between the builder's tea crowd and the people who've gone down the fancy coffee rabbit hole — pour-overs in a thermos, that sort of thing.
Personally I lean tea, strong enough to stand a spoon up in, but I'm curious what everyone else is working with. Does the flask matter as much as what's in it? And is there a combination — drink plus location plus time of morning — that just feels exactly right?
Tell me what's in yours.