Ember Smart Mug review: Is this high-tech mug worth it? It’s happened to all of us at one time or another: We make our morning cup of coffee, set it down after a few sips and find ourselves so busy ...

As far as we can tell, people have been drinking coffee since the 13th century. After all, the only equipment you really need is water, ground coffee and heat. So why, in 2021, would some spend $100 ...