Thermoscup
The Thermoscup Journal
Guides on flasks, insulation, cleaning and brewing well on the go.

The Best Way to Brew Loose-Leaf Tea On the Go
Tea bags are convenient. Loose-leaf tastes better. Here's how to get both convenience and flavour in one flask.

How Long Does a Thermos Actually Keep Drinks Hot?
The honest answer: it depends on more than the flask. Here's what actually changes the numbers.

How to Clean a Thermos Flask Properly (Without Ruining It)
The right way to keep a vacuum flask fresh - and the habits that quietly wreck the seal or the insulation.

How Does a Thermos Flask Actually Work?
The 150-year-old idea behind every vacuum flask, and why it still works better than anything electric.
