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
Another thing to check, do you pre-warm the bottle? If not, it will absorb the heat of (ie, cool down) the coffee as soon as you pour it in. But if you get scalding hot water from your faucet or a kettle, pour it in, wait a minute, and dump it you will have a warm bottle that won’t feel the need to take as much heat from the coffee.