Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar
Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar

Rumble Jar: Quart Size (32oz) Cold Brew Coffee Maker - includes Mason jar


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Regular price$29.95
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Make barista-quality cold brew at home with the award-winning Rumble Jar Cold Brew Coffee Maker. Designed to pair perfectly with a classic 32oz Mason jar (included), this 4-piece kit gives you everything you need to craft smooth, flavorful cold brew without the fuss. Its precision-engineered stainless steel filter is built specifically for cold brewing, with 200-micron holes that steep coarse or medium grounds at the ideal rate for rich, balanced flavor. The durable, food-grade silicone cap locks in freshness by creating an airtight chamber that prevents oxidation—keeping your coffee tasting better, longer. Lightweight, easy to clean, and free of wasteful paper filters, Rumble Jar is a simple, sustainable way to enjoy café-worthy cold brew at home.


  • Professional-Grade Cold Brew – 4-piece kit makes smooth, barista-quality cold brew in a classic 32oz Mason jar
  • Premium Stainless Steel Filter – Etched from a single sheet of 18/8 stainless steel for durability and easy cleaning
  • Optimized Brewing – 200-micron hole size ensures perfect steeping for coarse or medium coffee grounds
  • Better Flavor, No Waste – No paper or felt filters that strip oils and add cost—just pure, bold cold brew
  • Airtight & Leakproof – Food-grade silicone cap keeps your jar sealed tight to lock in freshness and prevent spills
  • Durable & Long-Lasting – Shock-absorbing cap protects the filter; designed to last for years
  • Easy Prep, Easy Clean – Less than 1 minute of prep; dishwasher-safe components make cleanup simple
  • Mason Jar Compatible – Brew, drink, and store in one vessel; easy to replace if the included jar breaks.
  • Coarse

How to Brew with Rumble Jar

  1. Load the Filter – Add coarse coffee to the stainless steel filter, cap it, and place it in the jar.
  2. Add Water & Rumble – Fill the jar with cold water, screw on the lid, and gently rotate the jar twice to mix.
  3. Steep – Let it brew: 16–24 hrs in the fridge or 8–12 hrs at room temp.
  4. Remove & Rinse – Pull out the filter, dump the grounds, and rinse (dishwasher safe too).
  5. Enjoy – Sip straight from the jar or store in the fridge for up to a week.

Optional: Use the included cotton bag as a second filter for extra-smooth coffee.

  • 32oz Wide-Mouth Mason Jar
  • 18/8 Stainless Steel Cold Brew Filter
  • Food-Grade Silicone Cap
  • Cotton Filter Bag (optional 2nd stage filter)