Cold Brew Mason Jar Filter Case of 15

Reviews (3 out of 5 Grommets)

Sorted by Rating

they just don't work

6/5/2018 by Laurie

I bought three, one for myself and each son. They simply do not work. The airlock system locks up totally, coffee does not drain through. The idea sounds so good... too bad.
Going back to my Toddy for cold brew.


Needs a little work!

6/1/2018 by Dennis

When I first saw this item, I thought what a great idea. When I tried it out, that was a different story. Either I need a courser grind or I need to reduce the amount of grind I use. If I use less grind, the coffee is weak...more grinds the water does not filter through. We're still working on it, but it's easier to buy the cold brew ready made.


Not the results I was hoping for.

12/18/2017 by Alicia

I have been making cold brew coffee year around for 3 years. I use a glass pitcher and add my coffee grounds and water, stir, put plastic wrap on the pitcher and put in fridge. When it's time to strain I use a reusable strainer from a coffee pot and strain it twice, then put it in a jar. I was hoping this cool gadget would simplify my work and cut down on things to wash. I was so sure it would work I bought 3. What I found was that it took too long to strain and the more I tried to help it along the more sludge ended up in the final product. I'm a double strainer anyway so this product did not work for me. I truly regret buying 3 of them.


Not Good

11/6/2017 by Larry

Unfortunately, I should have read the reviews before purchasing this item.  Like many others I found it to be completely useless.  The main problem is its inability to maintain a flow of filtered coffee.  It starts fine, then after about an inch has drained into the bottom jar it comes to a complete stop.  Taping and shaking only produces a few drops at a time.  For the price there are much better cold brew filters available.


Make it go away!

8/21/2017 by Patricia

Sadly, this product is a lemon. I have attempted to use it numerous times, with the same unsatisfactory result. The coffee is gritty and sludgy, and it lacks the delightful sweetness that characterizes well-made cold brewed coffee. Unfortunately, I fell for the sales pitch and bought two of them. Boo!


Wish the implementation was better

8/18/2017 by Leah

I wanted this product to work! The threads don't match the wide mouth mason jars. And the filter should be finer.


Not at all worth the cashola

6/27/2017 by Jeanine

I wanted to love the Bruw filter, but it leaked every time I used it (no matter how tightly I screwed it onto the jars) and would never drain sufficiently. Returned the first one, but the replacement did the same thing. So sad. Now I'm just cold-brewing in the jar and filtering with a cloth bag I got super cheap on Amazon. I tried!


Bought 2 one for me & a gift

6/9/2017 by Connie

Neither one of us recommend


not working the way it should

6/8/2017 by mary

This is not working at all for me. It has worked in the past but now it never works right.


Cheap garbage

6/5/2017 by Ryan

Batch 1: followed the instructions to the letter, filtered approximately one inch of coffee before leaking all over my countertop. Threading seemed cheap and inaccurate, screen was bent and frame had stray pieces if plastic hanging off.

I've been happy with past Gronnet purchases, but this wad terrible. Bought two -- one for Mother's Day gift -- and am hoping the recipient doesn't think I'm a moron for giving such crap as a gift.

My only regret is that I can't score it 0/5.

Items 51 to 60 of 66 total

The BRUW Story

BRUW | Cold Brew Mason Jar Kit

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.
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