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. Shake your way to cold brew coffee.
See how Rumble Jar works, in 92 seconds
We launched Rumble Jar on Kickstarter in November 2017, and we were blown away by the reception! If you missed the campaign but wanted to see how the early-adopters responded to their Rumble Jars, please read their reviews. (hint: we're quite proud of 'em!) The button below takes you directly to the Comment section, in all its 100% honest glory.Reviews