This mug also has no apparent safety shutoff; I forgot about it on my desk and returned a few hours later to syrupy tea that would have kept reducing until all the water evaporated. Using the ...

Ember is the self-heating mug that made me fall in love with self-heating mugs. It was among the first, and it's arguably the ...

To test its temperature insulation for warm drinks, I filled the 20-ounce travel mug with hot water from my office kitchen and used a prop thermometer to check the temperature every hour ...