Rumble Jar cold brew coffee maker

A better cold brew coffee maker

Make cold brew like a pro

We design equipment that keeps the cold-brewing process as simple as possible (1 minute prep time) while still producing some of the best-tasting coffee you'll taste. 

Rumble Jar: A Better Cold Brew Coffee Maker for Your Home


New! Rumble Jar just doubled in size

That same great filter from the original Rumble Jar. Now available in a half-gallon size.

64oz filter

Rumble Go: The Portable Brewer

Rumble Go™ builds upon the legacy of the original Rumble Jar by adapting the filter to make a more portable brew kit. The universal, height-adjustable design transforms your wide-mouth water bottle into a cold brew coffee maker that you can take anywhere. This could be the world’s simplest way to make great cold brew away from home. Check it out here

The Rumble Go cold brew coffee filter has a universal design to fit a wide range of popular water bottles

How easy is the process?


See how Rumble Jar works, in 92 seconds

Rumble Jar's stainless steel construction is far more durable than typical mesh filters

Outstanding Reviews

We launched Rumble Jar on Kickstarter in late 2017 and have been blown away by the reception ever since. Heck, it even earned us a Kickstarter Project of the Year award! Just have a look at our reviews.


Simple and smart.

To build a better cold brew filter, we needed to re-think the tiniest details. Our filters may look simple, but they're packed full of smart features.