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Cold Brew Maker

What materials are used in the products?

All our products are BPA-free, PVC-free, and Latex-free. Ovalware specializes in products made out of Stainless Steel and Borosilicate Glass. Most of our products that are made of stainless steel use 304 stainless steel. 304 Stainless steel is also k

Can I purchase a replacement part? Do you sell just the filter/carafe?

Currently, we do not sell any of our product parts separately besides from the Stainless Steel Filters for RJ3 Pour Over Makers and the silicon ring on the Stainless Steel Filters. However, we provide a one-year warranty for all our products. We’ve a

Can I make tea in my RJ3 Cold Brew Makers?

Yes!. Please refer to this ice tea recipe for step-by-step instructions. You can also check out more recipe ideas on our blog: Ovalware Blogs or check out this infographic!. 7-Ways-to-Enhance-Your-Cold-Brew.pdf

My lid does not seem airtight, what’s wrong?

Our lid is loose by design so it will fit into the filter. When installing the lid without the stainless-steel filter, please wiggle it around once installed to establish an airtight seal. Keep in mind that the lid is airtight, but not completely wat

How should I clean my cold brew maker's filter?

Here are some steps you can take to clean out the filter. Regular Cleaning. Thorough Cleaning. Dishwasher Cleaning

Why am I seeing sediments in my cold brew? My Coffee is Murky and cloudy, what do I do?

For our RJ3 Cold Brew Maker, we recommend a coarse grind level. However, please understand some finer grounds seeping through the filter is inevitable as the filter holes must be big enough for the best brewing. (To make sure enough flavor is extract

Can I put hot water in my RJ3 Cold Brew Maker?

Our Cold Brew Maker glass carafe is made of highly resilient borosilicate glass, meaning it can withstand temperatures from -30℃ ~ 180℃ without a problem. This property also means that the RJ3 Cold Brew Maker is microwave safe and dishwasher safe. Ho

How much coffee should I use in my RJ3 Cold Brew Maker?

A good rule of thumb is to fill the filter 5/6 the way up in the filter. With that being said, 5/6 may differ from bean to bean. Alternatively, for our 1L makers, we recommend using 16 Tbsp. For our 1.5L makers, we recommend using 21 Tbsp. For our 1.

How much water do I add to my cold brew concentrate?

It depends on your preference!. Some people like to drink the concentrate for strong coffee, others will dilute it with hot water to create hot coffee. We recommend starting from 1:2 water to cold brew ratio and adjust accordingly. It's always easier

My cold brewed coffee feels weak. What should I do to increase the strength of my coffee?

To increase the strength of the cold brew, we would recommend trying the following methods:. Brew using more coffee grounds, try filling the filter 5/6th full. (In addition, since coffee grounds shrink when coming in contact with water, you could add

Can I use pre-grind coffee? Can I use store bought coffee?

Yes! But please make sure the coffee ground is a coarse or extra coarse grind to reduce sediments in your cold brew concentrate.

How many ml to fill the max line?

For Cold Brew Makers, the max line is:. 1100ml for 1.0L1850ml for 1.5L

What grind size should I use?

For our Cold Brew Maker, we recommend a coarse grind level. However, please understand some finer grounds seeping through the filter is inevitable as the filter holes must be big enough for the best brewing. (To make sure enough flavor is extracted i

How long does my cold brew last in the fridge?

Up to 2 weeks! Much longer than hot brewing coffee.

Do I dilute the cold brew?

Cold brew is made as a concentrate and should be diluted before drinking.If your brew is too strong, try diluting it more or using fewer coffee grounds next time. If it's too weak, increase the coffee-to-water ratio or steep longer. A good starting p

I am afraid the Cold Brew Maker will generate inconsistent results

To get consistent results, use a kitchen scale for accurate coffee and water measurements, stick with the same grind size, and always brew for the same time frame (like 16 hours).

How do I dispose of wet grounds?

Used coffee grounds can be composted, added to garden soil for acid-loving plants, used to absorb odors, or as a mild abrasive for cleaning—just avoid flushing them down the sink or tossing large amounts in the trash.

How do I get rid of residual smell or stains?

To clean your cold brew maker, disassemble all parts, scrub with a baking soda paste to remove stains and odors, soak in a vinegar-water mix for deep deodorizing, rinse thoroughly, and air dry completely—avoid bleach and harsh scrubbing on delicate p

What coffee type should I use?

For a bitter taste, choose heavy-bodied beans with nutty notes, often grown in volcanic soil. Dark roasts offer rich, bold flavor, while medium roasts suit everyday drinkers, and light roasts are best if you're sensitive to strong bean taste. Longer

Do water spots appear on the glass?

Water spots can result from mineral deposits in hard water. To keep your carafe crystal clear, use filtered water when possible and dry the glass immediately after washing. For extra shine, you can wipe it down with a soft microfiber cloth or rinse w