--- product_id: 146404671 title: "Rumble Jar - Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included)" brand: "rumble jar" price: "NZ$74" currency: NZD in_stock: true reviews_count: 4 url: https://www.desertcart.nz/products/146404671-rumble-jar-next-gen-cold-brew-coffee-maker-for-mason store_origin: NZ region: New Zealand --- # 200 micron filter Airtight seal Durable design Rumble Jar - Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included) **Brand:** rumble jar **Price:** NZ$74 **Availability:** ✅ In Stock ## Summary > ☕ Elevate Your Brew Game with Next-Gen Innovation! ## Quick Answers - **What is this?** Rumble Jar - Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included) by rumble jar - **How much does it cost?** NZ$74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/146404671-rumble-jar-next-gen-cold-brew-coffee-maker-for-mason) ## Best For - rumble jar enthusiasts ## Why This Product - Trusted rumble jar brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Brew Like a Pro:** Craft barista-quality cold brew in minutes! - • **Kickstarter Approved:** Loved by backers for its innovative design. - • **Simplicity at Its Best:** Effortless brewing process for busy lifestyles. - • **Compatible & Convenient:** Fits standard 2-quart Mason jars for easy use. - • **Stay Fresh, Stay Strong:** Airtight design keeps your brew fresher longer. ## Overview The Next-Gen Cold Brew Coffee Maker features a 200 micron stainless steel filter designed for optimal extraction of coarse coffee grounds. Its innovative design ensures an airtight seal for freshness, while being compatible with standard 2-quart Mason jars. Perfect for busy professionals seeking a quick and high-quality cold brew experience. ## Description Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included) ## Features - A BETTER FILTER THAT MAKES STRONGER COLD BREW COFFEE: Cold brew experts designed this filter to make professional-quality cold brew in a Mason jar. Our 18/8 stainless steel filter features 200 micron holes, the ideal size for allowing water to circulate and optimal extraction to occur with coarse-ground coffee. It’s a radical improvement to those first-generation brewers with fine mesh screen filters, which are more suited to brewing hot coffee with finer grounds. You’ll taste the difference. - KEEPS COFFEE FRESHER THAN THE COMPETITION: Oxidation is the enemy of fresh coffee, so the key is to keep air out. Unlike traditional sit-on-top mesh filters, our next-generation filter rests fully inside the Mason jar, allowing the Mason jar’s lid to maintain its famous airtight seal. This keeps your cold brew fresher. The intact seal also means the jar stays leakproof, so it's truly portable and means an end to coffee leaking coffee all over your hands, kitchen and clothes. - NOVEL DESIGN BELOVED BY ITS KICKSTARTER BACKERS: The patent-pending capped-filter design features an ultra-sturdy, dent-resistant 18/8 stainless steel filter, with your choice of color for the food-grade silicone cap. The cap keeps grounds sealed inside the filter, while also working as a shock absorber that prevents rattling and protects the filter. Now you can say goodbye to those flimsy mesh filters that can produce weaker cold brew and easily fray, rip and get clogged up. - BREWING PROCESS IS SIMPLER THAN EVER: Professional-quality cold brew takes less than a minute to prepare at home. After adding coffee grounds and water, just tighten the lid and rotate the jar horizontally/sideways 2 or 3 times. This "rumble" step activates the brewing process. Then let it sit overnight and your cold brew will be ready in the morning, tasting like a barista made it. Cleanup is even faster than the prep. - COMPATIBLE WITH STANDARD 2-QUART/64OZ MASON JARS (NOT INCLUDED): Product includes a stainless steel filter with food-grade silicone cap and a 100% cotton filter-bag that can be used as an optional second stage of filtration if you brew with fine grounds (remember: coarse grounds are best for cold brew). The stated 2-quart capacity represents the volume of the Mason jar, not the volume of the filter. BPA free. Dishwasher safe. ## Technical Specifications | Specification | Value | |---------------|-------| | Shape | Basket | | Material | Stainless Steel | ## Product Details - **Material:** Stainless Steel - **Brand:** Rumble Jar - **Shape:** Basket - **Number of Pieces:** 4 - **Manufacturer:** Rumble Jar ## Images ![Rumble Jar - Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included) - Image 1](https://m.media-amazon.com/images/I/91W3mE3BhVL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ some of the best coffee I've ever made *by L***F on June 20, 2023* First thing first - I love coffee, but specifically I love iced coffee. Making iced drinks at home was challenging/a hassle because i don't want to invest in a big, bulky coffee maker with iced functions, and coffee pods. I feel they are horrible for the environment and are so wasteful of plastic (like the bottles of cold brew sold at the grocery store, as well). Because of my desire to make the best coffee with the least amount of waste, all of the coffee accoutrement I've invested in is metal, portable, reusable, and durable, like my bialetti moka pot percolator, and a hand coffee grinder for fresh ground beans.I decided on investing in the rumble jar too, to have unlimited access to iced coffee without a big financial investment or environmental impact. Let me say - the investment was SO worth the $20. I will bring this with me now wherever I go, along with my percolator. Not only is it an awesomely reusable option, it's durable, VERY easy to clean, and gave me the best cup of iced coffee I've had in a long time. It really feels like I have a full barista set up in my house with none of the equipment. At night, I grind fresh beans, dump them in the rumble jar/mason jar combo, agitate, and let it sit. (The agitation is really cool to see, also!!) It's such a low effort for high output of a large amount of excellent coffee. One mason jar for me is good for two days of coffee. It's strong, tastes amazing, and is so simple. From my perspective, it will be worth the purchase after 3 uses because I will have saved 3 plastic cold brew bottles from the grocery store. I am eager to see how well the metal will hold up, but the metal looks so much more durable than some of the dupes I've seen on Amazon or even Aldi.If you are searching for a reusable and SIMPLE way to make iced coffee all summer, here is your new thing!!! If you are searching for a coffee-making option for traveling/camping/eco friendly-ness, INVEST here. ### ⭐⭐⭐⭐⭐ Perfect Cold Brewer *by M***R on November 17, 2023* Love this thing so much. I can make coffee so much quicker now and with less thought. I previously used the OXO cold brew maker and was finding after about a year that it wouldn't drain well, even using a coarse grind. Also, the plastic container holding the brew had gotten scratched pretty good on the bottom where I would scrape it to force it to drain. While the plastic was noted to be BPA-free, it still weirded me out what else could be leaching into my coffee from those scratches. It was just so frustrating.The Rumble Jar is consistent and there's no fuss about draining anymore. Being stainless steel, there's no worry about it leaching any chemicals, unlike the scratches plastic.Plus, since it fits in a mason jar, I can brew it in my fridge now. The OXO brewer was too large for my fridge, so I would brew on the countertop, making my first couple cups warm, which I didn't like. Now it's cold from the first cup using the RJ.Really easy to clean. I just dump the used grinds into my compost bucket and wash the rest out. It would be even easier to clean if the bottom was detachable, though.You can't really make concentrate with it like I could with the OXO since the water needs to cover the column. So, I brew it with grinds up to the second notch and don't dilute it. Filled with water to the top of the 64oz mason jar to brew, I get about 49-50oz of net coffee. It's the perfect amount for 3 days for me, personally.I wish the silicone lid fit on the top of it a little snugger. I have noticed once or twice that the lid had just about come off while brewing when I went to drain it. It has just a small lip that fits over the top. Be gentle with your inversions and fill the mason jar up to the very top with water to prevent that.I can make the coffee and drain it with this, both quickly and consistently. Quick and easy cleanup. Wish I had searched for something like this sooner. ### ⭐⭐⭐⭐⭐ Rumble Jar *by E***A on October 28, 2023* I absolutely love this “Rumble Jar” for my DIY cold brew coffee I make in my 1/2 gallon wide-mouth mason jars! It comes w/ excellent step-by-step instructions. An bag, that’s able to be turnt into an additional strainer(work’s excellent!) (: No Leakage of any grounds through the “Rumble”, very High End Product & Durability (which is great). As well as Beyond Excellent Product for the price you paid on it!Definitely recommend this product for anyone looking to DIY HOMEMADE ICED COFFEE, COLD BREW & ETC.Just don’t overthink it by this. Other companies or, competitors.. or nothing to stand up to this product. This gets five stars+! I can tell this person last a very, very long time!Thanks very much Rumble (:*And I look forward to purchasing an additional rumble jar. I am saying this right sorry in the future so I can make two jars of homemade cold brew at a time I can’t believe I’ve never came across this product is there excellent!!Thanks again for ever coming up with this wonderful invention!!With beyond kindness, and gratitude,Danniell K. ## Frequently Bought Together - Rumble Jar - Next-Gen Cold Brew Coffee Maker for Mason Jars - 200 Micron Filter Is Ideal for Coarse Grounds & Stronger Coffee - Standalone Filter (Mason Jar not included) - Ball 1 64oz Wide Mouth Half Gallon Mason Jar - Mason Jar Pour Spout Lid for Wide Mouth Mason Jars, Mason Jar Pitcher Flip Cap Airtight Handle Lid, Leak Proof Seal Cover, Pack of 2 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/146404671-rumble-jar-next-gen-cold-brew-coffee-maker-for-mason](https://www.desertcart.nz/products/146404671-rumble-jar-next-gen-cold-brew-coffee-maker-for-mason) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-04-23*