Now you can make barista-quality cold brew coffee in your own home. Rumble Jar was recognized as a Kickstarter Project of the Year in 2018 for its design of a high-quality cold brew coffee maker that works in tandem with the classic Mason jar.
Rumble Jar was awarded as a Kickstarter Project of the Year in 2018 for its design of a high-quality cold brew coffee filter that works in tandem with the classic Mason jar. This filter (plus a Mason jar) is all the equipment you need to make professional-grade cold brew coffee right at home. Just take your favorite coffee beans, grind them coarsely, add water to the jar and give it a rumble. Total prep time takes less than a minute, and by the morning you'll have delicious cold brew coffee ready to drink.
Filters are available to fit 32oz wide mouth mason jars or 64oz wide mouth gallon mason jars
Rumble Jar is a line of award-winning cold brew coffee makers designed to keep the brewing process as simple as possible (1 minute prep time) while still producing professional-quality coffee. The secret lies in our stainless steel filter, which we built to the precise specifications of cold brew coffee experts, and then re-engineered it to work in tandem with Mason jars and a wide array of portable water bottles. Our initial product Rumble Jar was awarded as a "Kickstarter Project of the Year" in 2018, and its portable successor Rumble Go was recommended by Outside Magazine.