Need a cup of cold brew on the go? I just witnessed Ecoldbrew's thermos topper grind coffee beans and whip up a batch of cold ...

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

The Ecoldbrew smart thermos lid grinds beans and brews fresh cold brew in minutes, earning Best Kitchen Tech honors at CES ...

Ecoldbrew features a thermos topper that screws onto any thermos like an ordinary lid to whip up a batch of cold brew coffee ...