BRUW

Cold Brew Coffee Filter

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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Grommet Launch Conversation

  • Max
    Max

    Hello everyone! I'm proud to introduce the BRUW cold brew coffee filter to The Grommet. I'd be happy to answer any questions you have!

  • Max
    Max – Special Guest
    4/27/2017 9:50 AM

    Woohoooo we launched! Super pumped to answer your questions!

  • Max
    Max – Special Guest
    4/27/2017 10:00 AM

    So excited!

  • Guest
    Guest
    4/27/2017 10:15 AM

    Would this work for iced tea

  • Max
    Max – Special Guest
    4/27/2017 10:19 AM

    @Guest TOTALLY! It makes amwsing ice tea. Just use a few scoops or loose tea and a shorter time period. Make it how you like it :)

  • Judy
    Judy
    4/27/2017 10:42 AM

    @Max What a great idea! I only drink decaf coffee and no one makes cold brew decaf! What amount of coffee grounds do you recommend using? Is the amount the same as regularly brewed coffee?

  • Max
    Max – Special Guest
    4/27/2017 10:47 AM

    @Judy I like to use 2-3 spoonfuls of coffee for a full jar. If it's a ball Mason jar I fill it right around the 100ml line. If you grind the coffee coarser it works better!

  • Peter
    Peter
    4/27/2017 2:02 PM

    @Max 2-3 teaspoonfuls or tablespoonfuls?

  • Max
    Max – Special Guest
    4/27/2017 2:05 PM

    @Peter tablespoons. I don't measure, though. I just use a typical kitchen spoon and fill it up so it covers the bottom.

  • mindy
    mindy
    4/27/2017 10:38 AM

    Clever idea, but a bit pricy... can you tell us why it costs so much. Thanks and good luck!

  • Max
    Max – Special Guest
    4/27/2017 10:53 AM

    @mindy We pride ourselves on being completely made in the USA with minority labor and very rigorous quality control. It is still cheaper than most other cold brew coffee makers. Hope this helped :)

  • mindy
    mindy
    4/27/2017 11:02 AM

    @Max Then you had better fix the description where it says "Made in China" sorry.

  • CECELIA
    CECELIA
    4/27/2017 11:08 AM

    @Max

    Hi Max I'm a bit confused. You state 'we pride ourselves on being completely made in the USA...' yet the detail page states 'made in China..' I think there is a little conflict. Neat product.

  • Lynn
    Lynn
    4/27/2017 11:09 AM

    @Max I'm confused. The Grommet product info says that it's made in China, not the USA -- and it doesn't have the US flag icon that indicates a US-made product.

  • Kimberly
    Kimberly
    4/27/2017 11:14 AM

    @Max The description says the filter is made in China. You have stated here "completely made in the USA".

  • Kathleen
    Kathleen
    4/27/2017 11:19 AM

    @Max The product description says that the filter is made in China. Why the discrepancy?

  • Mike
    Mike – Grommet Team
    4/27/2017 11:27 AM

    Hi everyone, this is a mistake on our part. BRUW is made in the USA. We are making the change to reflect it as such on site!

  • Kathleen
    Kathleen
    4/27/2017 11:33 AM

    @Mike Where is the filter made?

  • Mike
    Mike – Grommet Team
    4/27/2017 11:37 AM

    The great state of Michigan.

  • Kathleen
    Kathleen
    4/27/2017 12:09 PM

    @Mike This discussion leaves me a bit skeptical. Why would "made in China" be listed in the original description if the filter is made in Michigan? Can you tell us where in Michigan it is manufactured? In this day of 'fake news', full disclosure is important.

  • Mike
    Mike – Grommet Team
    4/27/2017 12:13 PM

    It is made in West Bloomfield, MI. It was listed as 'made in China' because we looked at a spreadsheet incorrectly. Sad!

  • Barbara
    Barbara
    4/27/2017 10:55 AM

    How long does the filter last?

  • Max
    Max – Special Guest
    4/27/2017 10:58 AM

    @Barbara It's reusable! I haven't had to replace mine yet and I've been using it for two years :)

  • SKaplanTucson
    SKaplanTucson
    4/27/2017 10:56 AM

    Clever idea, but it seems to me I could build something like this myself.

  • Max
    Max – Special Guest
    4/27/2017 11:04 AM

    @SKaplanTucson I thought so too the first time I prototyped it. But, it leaked a lot and didn't last very long. We did all of the engineering and perfecting so you don't have to :)

  • Britt
    Britt
    4/27/2017 10:56 AM

    Looks like it would be messy to remove the brewing jar.

  • Max
    Max – Special Guest
    4/27/2017 10:59 AM

    @Britt It's not at all! You can take off the filter with the jar and it doesn't make a mess at all!

  • Tracey
    Tracey
    4/27/2017 10:58 AM

    How many ounces of coffee/tea does the mason jar make? Do you have bigger jars?

  • Max
    Max – Special Guest
    4/27/2017 11:00 AM

    @Tracey The jars are currently 32oz. We are thinking about selling a 64oz in the near future :)

  • Tracey
    Tracey
    4/27/2017 12:42 PM

    @Max I support this thought. More coffee!

  • Max
    Max – Special Guest
    4/27/2017 1:01 PM

    @Tracey sweeeeeet

  • Deborah
    Deborah
    4/27/2017 11:01 AM

    Need to know...what is the function of the straw? I like the idea as I have been just using a plain old sieve...this is simple..but curious about the straw.

  • Max
    Max – Special Guest
    4/27/2017 11:03 AM

    @Deborah Great question! The straw allows for airflow to the top jar so it filters faster. Otherwise, there's a vacuum created and it doesn't filter well.

  • Deborah
    Deborah
    4/27/2017 11:27 AM

    @Max Yes...I thought that...but double checking...thanks. Love the concept...will buy...

  • Max
    Max – Special Guest
    4/27/2017 11:32 AM

    @Deborah WOOHOO!

  • Gladys
    Gladys
    4/27/2017 11:05 AM

    I saw this yesterday on HSN. It looks amazing.

  • Max
    Max – Special Guest
    4/27/2017 11:32 AM

    @Gladys Thanks! So glad you saw it! It definitely makes great coffee.

  • Lynn
    Lynn
    4/27/2017 11:11 AM

    I tried to reply to another conversation, but my comment isn't showing up in my browser. You said that it's made in the USA, but the product information on the web page says that it's made in China. Could you clarify?

  • Mike
    Mike – Grommet Team
    4/27/2017 11:27 AM

    It's made in the USA, Lynn. That was our mistake. We are fixing it now.

  • Kathleen
    Kathleen
    4/27/2017 11:12 AM

    Your response a few minutes ago says that the item is completely made in the USA, yet the product description says that the filter is made in China. Why the discrepancy?

  • Max
    Max – Special Guest
    4/27/2017 11:31 AM

    @Kathleen There was an error on the web page. We're on it!

  • Nancy
    Nancy
    4/27/2017 11:14 AM

    Would regular ground coffee work in this, or would I need to grind my own?

  • Max
    Max – Special Guest
    4/27/2017 11:25 AM

    @Nancy Regular coffee works fine, grinding your own works better. We recommend a coarser grind of coffee for better results but grocery store coffee works alright as well. As long as you don't use too much you'll get a great cup!

  • Tim
    Tim
    4/27/2017 11:15 AM

    You are amazingly clever! Congratulations on your launch!! Great idea to repurpose a mason jar! Does it work with most standard 32Oz mason jars?

  • Max
    Max – Special Guest
    4/27/2017 11:26 AM

    @Tim HAHA Thanks Tim! It only works with wide mouth mason jars. We wanted to make sure there was enough area for the coffee to filter through and standard jars were a bit too small. Any standard wide mouth 32oz jar should work fine.

  • Meagan
    Meagan
    4/27/2017 11:19 AM

    I've been waiting for something like this to come out! As someone who has dealt with all the grief of straining coffee grounds when making cold-brewed coffee, I think your price is very reasonable!

  • Max
    Max – Special Guest
    4/27/2017 11:27 AM

    @Meagan Thanks so much for letting me know! It feels great to get the positive feedback :)

  • Sherry
    Sherry
    4/27/2017 11:25 AM

    I'm wondering, once filtered, are the 32 oz ready to drink or is the concoction concentrated and you dilute with water?

  • Max
    Max – Special Guest
    4/27/2017 11:29 AM

    @Sherry That depends on how much caffeine you like ;). Personally, I drink it straight but some find it to be too strong. The goal of BRUW is not to provide you with strict guidelines on how to make coffee, but a method to make the coffee that YOU like more easily. Drink it how you like it!

  • Sherry
    Sherry
    4/27/2017 11:34 AM

    @Max Thanks for the quick response. I've been a lover of cold brew for several years and have struggled through different contraptions. I think your price is reasonable, your design fantastic and I think I just found my Mother's Day gift I've been looking for! Thanks!!

  • Max
    Max – Special Guest
    4/27/2017 11:36 AM

    @Sherry YAY! Thanks, Sherry!

  • Dayle
    Dayle
    4/27/2017 11:39 AM

    I love this idea. I've been using Mason jars and a combo of gold filter and paper drip for years, and always wished for a less messy, faster system. I happen to like a strong, thick brew, and would often let in some "silt" for body during the filtering process. Does your system allow for this flexibility? Also, I have always measured by ounces - of water and of grounds (usually a medium coarse grind - 4 or 5 - to be fine enough to let some silt in), and would like to know by ounces how much grind to how much water. I have been using a 32 ounce repurposed spaghetti sauce Mason jar! Thanks.

  • Max
    Max – Special Guest
    4/27/2017 11:46 AM

    @Dayle The filter is coarse enough to still let some silt in. Similar to a french press. I don't measure by ounces anymore because I've gotten used to the system without it. I can definitely double check later today! I tend to shy away from using too much, however, because it can clog the filter. You can still get the coffee to get down, it just takes a little more effort (shaking, swirling, tapping etc.)

  • Dayle
    Dayle
    4/27/2017 11:57 AM

    @Max Thanks. I just checked my own notes as to proportions - for a guide. For a 32 oz jar, in a recent "formula", I used 24 oz of filtered water to about 2/3 to 3/4 cup of ground coffee - ground to 4 or 5 on the grind scale. I often use darker roast beans - and I don't dilute with water - only milk. I'd love to know how your proportions match mine. I'm concerned if this would clog your filter. Thanks again.

  • Max
    Max – Special Guest
    4/27/2017 1:04 PM

    @Dayle my proportions are a bit less. I'm not sure how that would filter, it shouldn't be an issue, just might be a bit slower.

  • ANGELITA
    ANGELITA
    4/27/2017 11:31 AM

    Max, the filter is sized for a standard wide-mouth mason jars. Can I use larger than quart bottles if I want to brew a larger volume of coffee?

  • Max
    Max – Special Guest
    4/27/2017 11:35 AM

    @ANGELITA We don't recommend it. The straw on the filter is cut to the specific length for 32oz jars. We are working on a solution right now to brew larger quantities. For now, you can make 2-3 jars of cold brew at once and filter them separately.

  • Seth
    Seth
    4/27/2017 11:31 AM

    Looks like a neat product. Does the filter remove all particulate from the finished concentrate? If not, do you offer a paper filter to help with that. Thanks!

  • Max
    Max – Special Guest
    4/27/2017 11:36 AM

    @Seth It removes most of it. There is still a bit of sediment remaining at the bottom similar to a french press. We love getting the oils from the bean and all the flavor, something paper filters can't provide.

  • Margaret
    Margaret
    4/27/2017 11:40 AM

    Does this have to be refrigerated while it is brewing? This would be really, really tall and too high for most refrigerators. Is it OK to just be at room temp while it is brewing?

  • Max
    Max – Special Guest
    4/27/2017 11:43 AM

    @Margaret Either works! Depends on your preference. But to clarify, you brew with the normal mason jar lid on, and only put the second jar on when you're ready to filter at the end. It's fairly compact in the fridge.

  • Jenny
    Jenny
    4/27/2017 11:48 AM

    Hey Max- wonderful idea. Will this length of straw work on a 1/2 gallon size mason jar so I can use it for company?

  • Max
    Max – Special Guest
    4/27/2017 12:14 PM

    @Jenny Hey Jenny, sorry for the delayed reply I was taking a test (high school life :/). The straw is not long enough yet. We are going to try to get longer straws to use. Ask The Grommet for it as well! Meanwhile, you can use a few 32oz jars and filter them separately.

  • christopher
    christopher
    4/27/2017 11:53 AM

    cool grommet,...IF you don't want caffeine. tannic acid will neutralize the caffeine after as little as 4 minutes of steeping. you should aim for that crowd. I'm NEVER crossing THAT fence!

  • Max
    Max – Special Guest
    4/27/2017 12:21 PM

    @christopher Awesome tip! Thanks for sharing

  • Dee
    Dee
    4/27/2017 12:06 PM

    Congratulations on your launch, @Max!

    I have two questions for you.

    1. Cleaning

    The instructions say hand wash only, which is unfortunate as dishwasher safe is a great selling point for coffee related accessories. I can see why the straw has to be handwashed, but is there any chance a future version of the filter cap portion (sans straw) might be made dishwasher safe, at least top rack?

    2. Parts/Warranty

    We've already lost or damaged several plastic straws from our water bottles. Do you offer the opportunity to order individual parts if they get damaged rather than buying a whole new unit? In that vein, do you offer any sort of warranty against defects in case the unit fails soon after purchase?

    Thanks for taking the time to chat with us today!

  • Max
    Max – Special Guest
    4/27/2017 12:16 PM

    @Dee Hi! we're working on a dishwasher safe version. The largest reason for the hand wash instructions is that we have not been able to test it in the dishwasher thoroughly enough. However, after just a quick rinse with water it's ready to reuse! Cleaning is super simple.

  • Max
    Max – Special Guest
    4/27/2017 12:17 PM

    @Max As to the warranty, we need to double check with The Grommet about sending out replacements. We'll get back to you :)

  • Max
    Max – Special Guest
    4/27/2017 12:21 PM

    @Max @Dee ^

  • Robert
    Robert
    4/27/2017 12:25 PM

    Great product Max...congrats on the launch. I am definitely pumped to pick one of these up. What is favorite coffee to use for cold brewing?

  • Max
    Max – Special Guest
    4/27/2017 12:30 PM

    @Robert So excited you're going to start brewing with it. My favorite? hmmmm tough question. I love anything from Ethiopia or Costa Rica. I think it gives it an excellent fruity note. BRUW with whatever you like!

  • Christine
    Christine
    4/27/2017 12:35 PM

    I add ground cinnamon and vanilla beans to the grounds...this is the most amazing cold brew maker..and I have passed it on via the vid to all my friends today...and will be ordering more for the Holidays as gifts!! Just passing on a compliment of PURE JOY to you and your product!!

  • Max
    Max – Special Guest
    4/27/2017 12:42 PM

    @Christine WOW! THAT SOUNDS DELICIOUS! Thanks for the kind words, Christine.

  • Muriel
    Muriel
    4/27/2017 12:51 PM

    @Max Hi, I went to your website to see what the shipping cost is (high shipping costs are non-starters for me), but I can't find anything. What do you charge for shipping?

    Also, I'm new to cold brew. Once brewed, can the cold coffee be heated without losing taste?

    Thanks for your help!

  • Max
    Max – Special Guest
    4/27/2017 1:03 PM

    @Muriel Cold brew can totally be heated! The result is a super smooth hot cup of coffee. Regarding the shipping on The Grommet, I'm going to defer to @mike

  • Jules
    Jules
    4/27/2017 12:53 PM

    Hey Max...I saw you on that TV competition show and thought you were amazing! Hopefully sites like The Grommet and HLN will help launch your product and I look forward to seeing what you invent in the near future! Congrats!!!

  • Max
    Max – Special Guest
    4/27/2017 1:01 PM

    @Jules Thanks so much! That definitely means a lot

  • Joe
    Joe
    4/27/2017 1:13 PM

    Just purchased for my college age son. Evidently cold brewed is big on his campus and he is super excited to be making his own upon returning home in 2 weeks.

    Question about the straw. Does it detach for cleaning and can you purchase the straw piece only, if it were to break?

    Great product and good luck

  • Max
    Max – Special Guest
    4/27/2017 1:17 PM

    @Joe the straw detached for cleaning. We're working on getting the straw listen online right now!(they usually don't break though :)

  • Heather J.
    Heather J.
    4/27/2017 1:14 PM

    Hi Max,

    I love the fact that you are a young entrepreneur! Is the filter unit a single piece, or does it disassemble for cleaning?

  • Max
    Max – Special Guest
    4/27/2017 1:18 PM

    @Heather J. The straw detaches from the unit. Otherwise, it's a single piece of plastic. Cleaning is super easy!

  • Melissa
    Melissa
    4/27/2017 1:14 PM

    Congratulations! I love that it's so simple. I had another which brew a whole pound but I'm the only coffee drinker. It took up a lot of space and now I've lost some of the pieces. Yours looks just right! Another mason jar use for Pintrest! Melissa

  • Max
    Max – Special Guest
    4/27/2017 1:19 PM

    @Melissa YAY!!!

  • GlennaMae
    GlennaMae
    4/27/2017 2:06 PM

    Can the cold brew be microwaved & then served hot? Does it lose something that way?

  • Max
    Max – Special Guest
    4/27/2017 2:12 PM

    @GlennaMae You can totally do that! The result is a super smooth, sweet, delicious cup of coffee.

  • Diann
    Diann
    4/27/2017 2:42 PM

    Max I have lots of wide mouth canning jars, Would these work with your filter? Dee

  • Max
    Max – Special Guest
    4/27/2017 2:43 PM

    @Diann totally!

The launch day conversation has ended. Please direct further questions about this Grommet to our Community Experience Team.

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