Our Newest Creation: Rumble Go
A more portable cold brew maker
Rumble Go™ features a universal, height-adjustable filter that transforms your water bottle into a portable cold brew coffee maker. It could be the world’s simplest way to make great cold brew outside your house. And you might already own a water bottle it fits into. Check it out here
An Ultra Simple Cold Brew Coffee Maker for Your Home
Introducing the world's simplest cold brew coffee kit: Rumble Jar. We built a cold brew filter specified by coffee experts, and then designed it to work perfectly inside the classic Mason jar. Rumble Jar is all you need to make professional-quality cold brew coffee right at home, as cheaply and quickly as possible. Just add coffee and water and give it a rumble. How it works
See how Rumble Jar works, in 92 seconds
How easy is it?
A simple 4-step process will get the brewing process started in under 1 minute. Then just let it sit overnight, and you'll have cold brew ready in the morning that tastes just as good as the stuff the pros make.
Kickstarter reviews
We launched Rumble Jar on Kickstarter in late 2017 and were blown away by the reception! Click below to see the early-adopters' reviews in all their 100% honest glory. (hint: we're obviously quite proud of the response!)
Reviews