Let us answer your coffee & Ovalware product-related questions

We recommend: • 85g (3 oz) of coarse ground coffee for the 1.0L Cold Brew Maker • 110g (3.9 oz) of coarse ground coffee for the 1.5L Cold Brew Maker This ratio creates a smooth, balanced cold brew. Feel free to adjust the amount to match your preferred strength. You can also access our cold brew ratio calculator to dial in your preference: https://www.ovalware.com/pages/cold-brew-ratio-calculator

While the cold brew maker itself can withstand boiling water, the cold brew coffee method requires cold or room temperature water for best results.

Please use a coarse to extra coarse grind in your cold brew

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 parts.

Cold brew strength is all about personal preference. We recommend trying it straight first, then adjusting the dilution with water to match your taste. To get the perfect strength from the start, use our Cold Brew Ratio Calculator: 👉 ovalware.com/pages/cold-brew-ratio-calculator

Yes! Just make sure to use a coarse or extra coarse grind.

Yes! Please refer to this iced 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

The lid is designed to fit both with and without the filter. When using it without the filter, wiggle it slightly to create an airtight seal. Note: it's airtight, not fully watertight — avoid tipping the carafe when full as liquid may leak. See this video for how to install the lid: https://youtu.be/8rCWC4Duuec

Max fill line: 1100ml (37.2oz) for 1.0L model, 1850ml (62.5oz) for 1.5L model.

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

After you have dialed down your cold brew preference, to get consistent results, use a kitchen scale for accurate coffee and water measurements, stick with the same grind size, and brew for the same time frame (e.g. 16 hours).

Yes, Ovalware’s Cold Brew Maker silicone seal is designed to be removable.

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. Avoid flushing down the sink or throwing large amounts in the trash.

Ovalware’s Cold Brew Maker comes in two sizes: 1L and 1.5L. Consider upgrading to the larger size for bigger capacity.

Contact our support team and we will surely find a fitting solution for you.

Ovalware uses high-quality borosilicate glass—renowned for its strength and resistance to thermal shock—offering a lightweight yet durable mug that outperforms traditional glassware.

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 parts.

Yes, the Cold Brew Maker lid is airtight, specifically to preserve flavor and freshness by preventing oxidation.

The stainless steel filter in the cold brew maker is assembled through welding, and not through soldering. The filter is made of 304 stainless steel, also known as 18/8 stainless steel or A2 stainless steel. The cold brew maker, along with the included stainless steel filter, is tested by SGS for heavy metal. The product contains no detectable heavy metals such as aluminum, lead, and cadmium.

The filter is best with our Ovalware Pour Over Coffee Maker. The filter also fits most standard pour-over coffee makers, including Chemex and Hario V60.

Fine grounds may cause slower filtration and sediment. Medium to medium fine grind is recommended.

Yes, the stainless steel filter is dishwasher safe, making cleanup convenient.

For thorough cleaning, soak the filter in a mixture of white vinegar and warm water for 20–30 minutes, then rinse thoroughly. Regular cleaning helps maintain performance and flavor.

Being reusable, the stainless steel filter eliminates the need for disposable paper filters, reducing waste and promoting eco-friendly brewing practices.

Metal filters allow more of the coffee's natural oils to pass through, resulting in a richer and fuller flavor compared to paper filters.

Minimal sediment may appear when using finer grinds. Using a coarser grind can help reduce this.

The filter is constructed from high-quality stainless steel, ensuring durability and resistance to rust.

Please make sure to deep clean and descale your stainless steel filter once every 2-3 weeks. Soak your filter in a mixture of white distilled vinegar and warm water for 1-2 hours to descale. After, please scrub away any residue using a toothbrush or kitchen scrub.

Rinse the filter with warm water after each use, soak in a vinegar-water mix and scrub every 2–3 weeks for deep cleaning, and place it on the top rack of the dishwasher—just shake out loose grounds first.

Rinse the filter with hot or warm water—start with the outside, then the inside. This routine helps maintain optimal performance.

For a thorough clean, soak the filter overnight in hot water with a small amount of dishwashing detergent. Afterwards, use a kitchen scrub or toothbrush to remove any remaining residue.

Yes, the filters come in silver, titanium-coated gold, and titanium-coated rose gold finishes.

Yes, it's recommended to pre-rinse the filter with hot water to to warm the filter, which can help in achieving optimal brewing temperature.

Brewing with a metal filter may result in a faster flow rate compared to paper filters. It's advisable to monitor the brewing process and adjust your technique as needed.

By eliminating the need for disposable paper filters, this reusable stainless steel filter reduces waste and is a more sustainable option for coffee brewing.

The filter features a superfine high-quality 304 stainless steel mesh on the inside and a laser-cut filter on the outside, ensuring effective filtration while allowing essential oils to pass through for a richer flavor.

The color is obtained by vacuum titanium electric coating. The colour on the surface is titanium material and it is food grade .We don't employ any other method which are not food safe.

The dripper is designed to fit most standard mugs. However, for optimal stability, it's best used with mugs that have a diameter matching the base of the dripper.

Medium to light roast beans, single origin beans, freshly roasted whole beans.

Use a medium to medium-fine grind size for optimal results.

A gooseneck kettle is highly recommended for precise pouring, better flavour extraction, and consistent results.

Yes, Ovalware Pour Over Maker is beginner-friendly.

Coffee-to-water ratio is 1:15 to 1:17 — meaning 1 gram of coffee for every 15–17 grams (ml) of water.

Use a gooseneck kettle that has temperature control. Ideal temperature is 195°F to 205°F (90°C to 96°C).

Use the Almighty Glass as a lid on the carafe, which comes with the Pour Over Maker to maintain the temperature.

For a thorough clean, soak the filter overnight in hot water with a small amount of dishwashing detergent. Afterwards, use a kitchen scrub or toothbrush to remove any remaining residue.

The narrow neck pours easily but can be tricky to reach—use a soft bottle brush or sponge wand. The smooth borosilicate glass resists residue, so a quick rinse and gentle scrub usually does the job.

While the carafe is made from heat-resistant borosilicate glass, it's essential to handle it with care to prevent breakage.

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 with a vinegar solution occasionally to remove mineral residue.

Yes, it's made of durable, heat-resistant borosilicate glass and is dishwasher safe.

Most of our products that are made of stainless steel use 304 stainless steel. 304 Stainless steel is also known as 18/8 Stainless Steel, A2 Stainless Steel. A great property of stainless steel is that it does not rust. However, people who live in regions with high calcium content tap water (hard water) may find mottling discolorations built up in their coffee brew-ware. You can remove this discoloration by filling the kettle with one part vinegar to three parts water and bring the mixture to a boil. Then take it off the heat and let it cool to the touch before discarding the mixture. The stainless steel used in our stainless steel filters is tested by SGS for heavy metal. The material contains no detectable heavy metals including aluminum, lead, and cadmium.

Ovalware’s double-wall design offers excellent insulation for a glass mug—keeping drinks hotter than standard ceramic or single-wall glass, while staying cool to the touch. It’s ideal for those who savor their drinks fresh without the overly prolonged heat of sealed thermoses.

While the Double Wall tasting Glass is made from heat-resistant borosilicate glass, it's still glass so it is essential to handle it with care to prevent breakage.

Yes! Our Double Wall Glass is made from heat-resistant borosilicate glass, designed to handle both hot and cold drinks safely. The double-wall insulation keeps hot drinks hot and cold drinks cold—without condensation or burning your hands.

Not at all. The double-wall design insulates your drink, so it stays hot or cold inside—while the outside stays comfortable to hold, with no condensation or burning.

Yes, you can use metal spoons. The borosilicate glass is durable and resistant to light scratching, but to keep it looking its best long-term, we recommend using wooden or silicone utensils when possible.

There is no vacuum between the two layers of glasses, it is a layer of air. The holes vent the hot air to prevent the glasses from shattering since glass expands when heated. The divot is added to help equalize the air pressure when the glasses are cooling down. The holes are then sealed once the glasses have cooled with a food-safe UV cured resin.

Hey, have you heard of our Double Wall Mug? If not, let's have a look at it.

Yes, all glass products are microwave safe.

Absolutely! While it’s designed for latte art, it’s perfect for cappuccinos, flat whites, cortados, tea, cold brew—even desserts like affogato. The double-wall insulation keeps drinks hot or cold, making it as versatile as it is stylish.

It’s made from high-quality borosilicate glass—lightweight, durable, and resistant to thermal shock. While stronger than regular glass, it should still be handled with care to avoid breakage.

While the Latte Master Glass comes in three variants (clear glass,stealth grey and frost white), for the best latte art layering visual impact we recommend the clear glass version.

Ovalware’s high-quality borosilicate glass is resistant to scratching from everyday use, including metal spoons. Stir freely—your glass is built to handle the rhythm of your daily ritual without compromising clarity or strength.

Ovalware’s double wall design offers significantly better insulation than standard glassware, keeping drinks hot longer while maintaining a comfortable outer surface—perfect for relaxed sipping without burning your hands.

The Ovalware Latte Master Glass is made of durable, heat-resistant borosilicate glass and is dishwasher safe.

As with any glass product, fingerprints are bound to appear on the glass. Water spots can result from mineral deposits in hard water. To keep your glass 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 with a vinegar solution occasionally to remove mineral residue.

Ovalware’s double wall design offers significantly better insulation than standard glassware, keeping drinks hot longer while maintaining a comfortable outer surface—perfect for relaxed sipping without burning your hands.

Ovalware uses high-quality borosilicate glass—renowned for its strength and resistance to thermal shock—offering a lightweight yet durable mug that outperforms traditional glassware.

The 500ml (17oz) capacity gives you flexibility—perfect for larger lattes, iced coffee, or a generous pour of your morning brew without the risk of spilling. For smaller servings, the elegant tapered shape still feels balanced and comfortable in hand.

The minimalist, transparent design fits effortlessly into any kitchen aesthetic—letting your coffee or tea take center stage. It's a timeless piece that matches every style.

The borosilicate glass is designed to handle everyday use, including hot-to-warm transitions.

The Ovalware 500ml mug is thoughtfully designed with a wide opening and moderate height to fit under most standard espresso machines and pour-over setups. It’s perfect for baristas and home brewers alike who want function without sacrificing style.

No, the handle stays cool to the touch even when your drink is hot. The double-wall construction ensures that the outer surface, including the handle, remains comfortable to hold, offering a safe and pleasant sipping experience every time.

Ovalware’s high-quality borosilicate glass is resistant to scratching from everyday use, including metal spoons. Stir freely—your mug is built to handle the rhythm of your daily ritual without compromising clarity or strength.

Ovalware’s double wall design offers significantly better insulation than standard glassware, keeping drinks hot longer while maintaining a comfortable outer surface—perfect for relaxed sipping without burning your hands.

The premium borosilicate glass construction is easy to rinse and clean by hand, preserving the integrity of the double wall seal and keeping your mug pristine for years.

Ovalware uses high-quality borosilicate glass—renowned for its strength and resistance to thermal shock—offering a lightweight yet durable mug that outperforms traditional glassware.

The smooth interior and wide opening make manual cleaning simple—no corners, coatings, or crevices to worry about. A soft brush or sponge will do the trick.

The smooth interior and wide opening make manual cleaning simple—no corners, coatings, or crevices to worry about. A soft brush or sponge will do the trick.