Rumble Jar Cold Brew Coffee Maker

 

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Overview

Simple, small, and reusable; the Rumble Jar makes cold brew easier than ever. A unique acid-etched basket and silicone lid nest perfectly in the wide mouth of a Mason jar. Brewing couldn't be easier, add coarse-ground coffee to the 'regular' or 'concentrate' line, then add water (measurements on the jar work perfectly). Give the Rumble Jar a shake and let sit 12 to 24 hours. Each Rumble Jar includes a reusable filter, silicone lid, cotton bag, and 32-ounce Ball jar. Brews up to 18 ounces of cold brew concentrate. Dishwasher-safe.

Features and Functionality

  • Acid Etched Steel - The Rumble Jar's metal filter offers finer filtration than comparable mesh filters, and is sturdier to-boot.
  • Optional Cotton Filter - The included cotton sack can be used as a secondary filter for even smoother cold brew.
  • Jar Options - The Rumble Jar fits any wide-mouth Mason jar (as long as its tall enough!).
Pros
  • Stop Worrying About Coffee - Even we get tired of the precision weighing, measuring, and worrying over a morning cup. Sometimes, putting our favorite coffee in a jar and giving it a shake is incredibly cathartic.
  • Phenomenal Filter - We tested a bunch of these Mason Jar filters before settling on one we liked. The difference in flavor and clarity between regular mesh and etched steel is noticeable. The filter was also quite a bit more sturdy than any of the mesh options we used.
Cons
  • Size Limitations - While the Rumble Jar's filter is the perfect size for classic 32-ounce jars, it's a little small for 64-ounce variants.

Specs

Model Number #RUMBLE-32-TRAD-RED
Width No
Depth No
Height No
Product Weight (lbs.) 1.5000
Size 32 oz
Material Glass and Stainless Steel
Manufacturer Rumble Jar

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