(Credit: Andrew Gebhart)
Ecoldbrew makes it easy to have a cup of cold brew coffee while you’re on the run. The nifty gadget from a startup of the same name does a lot within a compact frame. Essentially a large lid for a travel thermos, Ecoldbrew stores coffee beans until you're ready, then grinds them to your specification, before pulling water from the thermos into a separate reservoir and churning out a chilled dose of java.
Specifying how you want to grind your beans is as simple as turning a dial on top of the lid. After hitting a button to start the process, you can monitor its progress from a simple display shown in the center of the dial. If you have the patience, you can lengthen the brewing time for a darker cup, but I saw the company repeatedly finish a batch of cold brew in a prompt five minutes during a demo at CES 2026.
The whole device screws onto a thermos like an ordinary lid. When unscrewed, you can see a straw-like contraption at the bottom used to suck up water from the thermos, as well as a cylindrical piece above the straw where it stores the ground beans and produces your drink.
The top of the lid has a flip up compartment on one side to easily load in more beans, and there's a flip up straw on the other side for taking sips when the beverage is finished.
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The cup of coffee I tried after five minutes was admittedly quite watery, but it produced better coffee when given a little more time. This was also a prototype of the gadget and it was mass producing a drink for a crowd, so the final product could hopefully brew a decent cup even within a five minute time frame.
Ecoldbrew’s simple design is what makes it compelling. It comes with its own thermos, but you can put it on top of any other alternative of a similar size. For example, representatives noted it works as an accessory to Stanley’s travel mug range.
Even better, Ecoldbrew is affordable. The startup will be launching a Kickstarter campaign to fund production soon, and models will start at $99, an easy splurge given the convenience it affords cold brew fans.
Like any Kickstarter gadget from a startup, take all promises with a grain of salt. We’ll aim to acquire a production model when it's ready to see if it can reliably turn out coffee that’s robust enough to please, even in a quick time frame. If it works as intended, Ecoldbrew is innovative, practical, and affordable. It’ll be a convenient way to quickly get your morning caffeine fix outside of your kitchen.