Can’t hurt to have options. My dad’s birthday is mid-September, a flask of nice whiskey is a nice way to celebrate in the backcountry. I use a
Stanley flask for this purpose. Easy to clean and a little larger than standard.
I use a plastic one, works fine and was cheap. Pewter may be too soft and deform inside a pack. I have see some titanium ones that are super cool, also super spendy. Stainless would be a reasonable way to go.
These look pretty slick...
I have one that is heavy glass with a leather cover that belonged to my grandfather, probably about 70 years old. I have tried the plastic ones and it seems to me that if you leave it in the plastic to long it changes the taste. Stainless would probably be good also.
I have a Stainless metal one someone gave me as a gift. It still makes it in the occasional bird hunt when some “aiming fluid” is the order of the day. For backpacking I use a Nalgene flask or platypus makes bladders for booze/wine. Not sure if their is any magic to the booze version vs a normal bladder.
I can’t say that the taste thing has been an issue but I don’t have a really top notch pallet. Like all cooking and water carrying gear, I wash the hell out of the flasks before use including filling with 2-3 change of hot water and letting them soak for a day. The booze doesn’t usually last long either. I mainly carry it for short trips or it gets used up early on long trips so it isn’t in the flask for more than a couple of days.
Taking nips of a flask in the backcountry is great. If you want to step it up it is easy to make some descent creek water cocktails. I mix bourbon, some treated water and a real lime powder and sugar packet to make some kind of Ricky. Throw in a handful of snow, a nice fire and some descent company and you feel downright luxurious.
I have a nice pewter one but would never take it in the field. Got a cheapo plastic one at either Walmart or the liquor store. Holds more and much lighter. A Mexican hot chocolate with Mezcal is a campfire favorite.