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

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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 re-designing the filter to make it more portable. The universal, height-adjustable design transforms your wide-mouth water bottle into a cold brew coffee maker 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?

instructions

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.

Reviews

Simple and smart.

To build a better cold brew filter, we needed to re-think the tiniest details. Rumble Jar looks simple, but it's packed full of smart features. 

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