Cold Brew Mason Jar Starter Pack


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A filter and two mason jars are all you need to make cold brew at home. This full-fledged cold brew maker is super straightforward. The filter screws onto both jars, and sieves out the coffee grounds. The result? A fresh, smooth-tasting, cold-brewed coffee that’s less acidic and gentler on your tummy and teeth than coffee brewed with heat.

  • Made in the USA: West Bloomfield, MI
  • Materials: Filter: High density polyethylene (HDPE), stainless steel, vinyl; Jar: Glass
  • Care: Hand wash with soap and warm water
  • Includes one filter, filter straw attachment, two 32 oz. standard wide-mouth Ball mason jars, two mason jar covers, and instructions
  • Unique filtration system
  • Filter fits any standard wide-mouth mason jar
  • Dimensions: 9" x 8" x 7"
  • Weight: 3 lbs.

27 Reviews (3.5 out of 5 Grommets)

Sorted by Rating

Works Great!

3/12/2019 by Sandra

I was not sure if this would work, but it does and makes cold coffee that is not bitter. Mason jars are dishwasher safe, easy to replace if you drop one (like I did) and makes quite a bit of cold coffee. I use mine in the blender with ice, cream and sweeter to make a frothy frozen coffee drink.More > < Less


A nice gift

2/13/2019 by Megan

The coffee-loving recipient enjoyed this!


I like this product.

1/27/2019 by Kurt

A good invention that works well and is simple , I'm happy to support a young inventor who also happens to be from Michigan .


Easy to use and clean, makes great iced coffee

8/13/2018 by Jean

Very easy to use and clean and makes great iced coffee


Simple and great!

7/28/2018 by Karen

Love this! I have more complex cold brew systems but this is better. Simple is often better!

Items 1 to 5 of 27 total

BRUW | Cold Brew Mason Jar Kit

About BRUW

Mason Brew

Make your very own cold brew coffee, easily. Put this cold brew coffee maker filter onto a wide-mouth mason jar.

It’s super straightforward. Let coffee grounds soak in a cold-water-filled mason jar for over twelve hours. When you’re ready to get your caffeine dose, twist the filter onto that jar with the straw side down. Then twist the second mason jar on top of the filter. Flip. Shake. And watch your cold brew filter through.

In case you’re uninitiated to cold brew, it’s smoother, less acidic, and it’s easier on your tummy (and teeth, too) than coffee brewed with heat. Less acidity also means you can better taste all the subtle flavors—like traces of chocolate, fruit, and nut inherent in different beans.

And even though grown-ups are the ones most likely to enjoy their coffee, this filter was invented by a teen. Max Feber was just 16 when he came up with the idea. It’s one you’ll be able to enjoy every day.