I take a 2 hour commute to school every day. My Stanley thermos, which was gifted to me by my very consumerist aunt, doesn’t keep my moka pot coffee hot for 2 hours.
Although it is a pretty good thermos it seems to be leaking a lot of heat from the metal section near the cap.
Is there any thermos that has every section of it isolated? Like, I shouldn’t even be able to tell if there is a hot liquid inside
Zojirushi is a good brand (Japanese but you can get their stuff in the west, e.g. on Amazon). I’ve only used their thermos for cold beverages, but it’s rated for hot as well. Comes in 16oz and 20oz IIRC. They may have a bigger one, too.
Stanley is one of the best.
People swear by Yeti, but I think it’s overpriced fashion. I kind of want one of their 12oz mugs for coffee at work. I like the style.
The problem with Zojirushi (I’ve owned two of the black 20 oz thermoses) is the gaskets in the cap that keep the beverage insulated at the top are prone to disclouration, after which I don’t trust them. Reviews say you can, but I don’t. With Stanely, the gaskets are easier to clean, remove/replace, and, I think you can easily order replacements. I don’t think you can with Zojirushi. Otherwise, Zojirushi is very hard to beat.
Zojirushi official: https://store.zojirushi.com/collections/vacuum-insulated-mugs-bottles
Amazon (not affiliate): https://www.amazon.com/zojirushi-thermos/s?k=zojirushi+thermos
Target: https://www.target.com/s/mug+thermos+zojirushi
Walmart: https://www.walmart.com/c/kp/zojirushi-thermos
So, there are some options (the first four search results on DDG) and you can see what they offer. If you look at the pictures (especially on the official one) you can sometimes see the top gasket. It’s kind of shaped like a pacifier, and it plugs the plastic mouthpiece you sip from. It does its job well, it’s easy to remove (pulls off a straight plastic plug), but if you don’t clean it several times a day, it gets these weird black spots on it. I see the black spots, I think mould, whole thing goes in the bin. Then there’s the mouthpiece itself. If you remove the cap, and then place your thumb in the mouthpiece and push down, the mouthpiece pops out the bottom with a bit of force (maybe more than you’re comfortable giving, but it won’t hurt the lid). At the bottom of the mouthpiece is a second gasket that is hard to remove and difficult to clean. This also must be cleaned multiple times a day, or it too gets black spots and other discolourations. This having direct contact with the beverage makes it the bigger problem. Plus, you don’t see it, so, “out of sight, out of mind.”
I still think their thermos might be what you’re looking for, just keep some way to sanitise the gaskets handy and keep them clean. People say those thermoses last a lifetime (same with Stanley) but you really gotta keep up with the gaskets.