The whole device screws onto a thermos like an ordinary lid. When unscrewed, you can see a straw-like contraption at the ...

The $99 Ecoldbrew thermos lid grinds coffee beans, pulls water from your mug, and brews cold coffee in just five minutes.

Robin has worked as a credit cards, editor and spokesperson for over a decade. Prior to Forbes Advisor, she also covered credit cards and related content for other national web publications including ...