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.

This 4-piece brew kit 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 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.

Includes:  + 32oz Wide-Mouth Mason Jar + 18/8 Stainless Steel Cold Brew Filter + Food-Grade Silicone Cap (Orangey-Red color) + Cotton Sock (included as an optional 2nd stage filter)

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.