FAQ: Meet Coffee's Favorite Tumbler | Mastermind's Kōld Brewer
For the most up-to-date information about the status of our project, check our project updates on Kickstarter!

Can I brew Hot drinks in this brewer?

Absolutely. While the brewer was especially designed for cold brewing, brewing hot coffee or tea is easy. We’ve outlined the process below: 1. Fill grounds up to the fill line in the filter. 2. Fill your tumbler to the fill line with water at 195-205 degrees Fahrenheit. 3. Carefully submerge the filter into the cup, and swirl the brewer gently for 3 minutes. 4. Remove the grounds and enjoy!

Last updated: December 04, 2018 22:58

Why was cold brew so popular this summer? Isn't it just iced coffee?

Cold brew exploded this year because it is both better tasting and healthier than regular hot-drip coffee. No, it is not iced coffee! The cold brewing process uses cold water and time to extract the flavor from the coffee grounds, compared to the rapid extraction that hot-drip brewers use.

The secret is that cold water extracts ~70% less acid from the coffee grounds than hot water (plus it also pulls out fewer alkaline solubles), which means that your coffee ends up tasting a lot less sour and bitter. If you have frequent heartburn & drink a lot of coffee, cold brew is a delicious solution to your problems! (Unofficially, our friend’s physician recommended they switch to cold brew for this reason!)

So if you’re new to cold brew, get ready to enjoy a smoother, sweeter flavor of coffee.

Last updated: December 04, 2018 23:34

What is your international shipping policy?

Our shipping costs do not include customs fees or taxes. Sorry about that! We unfortunately don’t have the capability to estimate these charges ahead of time for each country, especially in today’s age where it’s become wildly unpredictable. So, international backers…please make sure you take into account any additional fees and taxes charged by customs in your country, as well as for ensuring the imported product complies with your local laws. Thanks so much for your understanding!

By our estimates, here are some countries which do NOT have import duties/taxes: Australia, Indonesia, Taiwan(Single units only), Hong Kong, Russia, Singapore, Japan, Mexico(Single Units only), South Korea, Morocco, Malaysia, Philippines.

Last updated: December 04, 2018 23:34

How can I get the polar white tumbler? Also, how can I get more tumblers?

We are using a service called Backerkit, which will allow you to choose you tumbler color and add on cool accessories for just a bit extra cash. We’ll send out surveys after the campaign for all this stuff.

Last updated: December 04, 2018 23:34

How do I clean the Kōld Brewer? Can I scratch the paintjob?

We believe in practical solutions, which is why we made sure that everything would be dishwasher safe. You can also use anti-scratch scrubbing pads, but avoid using the Green Heavy duty scour pads on the copper finish and the filter.

Also, unlike most other filters, our MK filter won’t become clogged up with coffee residue over time. (If you use a Ninja Coffee brewing system, you have seen this firsthand.) We have found that simply rinsing the filter out a bit each time does the trick.

Last updated: December 04, 2018 23:34

What other tumblers will this lid and filter fit?

30 oz Tumblers Only!!!

The lid & filter fit all YETI & Ozark Trail tumblers, as well as most off-brand tumblers.

The lid and filter will NOT fit RTIC & BUILT tumblers.

If you are worried about your fitment, cruise on over to your nearest Walmart with your lid, and try fitting it onto an Ozark Trail tumbler from their camping section! ;) haha (Or just ask us and I’ll try to order one & check or walk you through the measurement process)

Last updated: December 17, 2018 16:51

Shipping Updates
For the most up-to-date information about the status of our project, check our project updates on Kickstarter!

Current Estimated Shipping Date: August 2019

All rewards will be en-route via local delivery carrier by end of August. This date has been pushed back due to manufacturing delays, and complications with injection molding development.

Last Updated At: 06/23/19 | See Kickstarter Update
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