About OVALWARE
OVALWARE was founded in 2015 by brothers Robert and Charles Mai, who came to coffee gear as outsiders to the craft and built the company around a single design idea: shaping brewing equipment after the oval form of the coffee bean itself. That idea shows up directly in the hardware -- hand-blown borosilicate glass and stainless steel wherever plastic would normally touch the coffee, on the theory that a cold brew maker sitting in a fridge for up to a day should not be leaching flavor from a Tritan or AS-resin body. The company remains family-owned and has stayed narrowly focused on cold brew makers, pour-over brewers, reusable stainless filters, and double-wall glassware rather than expanding into general kitchenware.
That focus has been noticed outside Amazon's review count, too: OVALWARE's cold brew maker has been covered by The Kitchn, CNN, and The Spruce, and the brand has been recognized by MoMA. The Kitchn's own review singled out the same details we did in our testing -- a genuinely airtight lid, an easy-to-remove reusable metal filter, and a glass pitcher that comes out completely free of stray grounds. OVALWARE says it has sold more than 100,000 cold brew makers to date, and the flagship 1.5L model alone carries over 13,500 ratings on Amazon at a 4.5-star average, which is the kind of volume and consistency that's hard to fake.
Brand website: ovalware.com
What OVALWARE makes
OVALWARE's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Cold Brew Makers (1.0L & 1.5L)
airtight borosilicate glass with a laser-cut stainless filter -- featured on Brew Gazette — featured on Brew Gazette
Pour-Over Brewers
glass and stainless pour-over sets built on the same no-plastic-contact design
Stainless Steel Reusable Filters
replacement and accessory filters for the cold brew and pour-over lines
Double-Wall Drinkware
espresso cups, mugs, tasting glasses, and latte glasses
Serving Carafes & Accessories
glass serving pieces designed to match the brewing gear
Why we recognized OVALWARE
The Brew Gazette Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our hands-on category reviews. OVALWARE earned it on the strength of the products below, evaluated the same way every product on this site is: bought, brewed with daily, and judged on what lands in the cup.
OVALWARE products we rated highly
OVALWARE Airtight Cold Brew Coffee Maker, 1.5L / 51oz Borosilicate Glass
The only cold brew maker in our roundup where nothing but borosilicate glass and stainless steel ever touches the coffee -- no Tritan, no AS resin, no plastic lid liner sitting in the brew for up to a day. The laser-cut stainless filter holds back more fines than the stamped mesh used on budget jars, and the airtight seal keeps the finished concentrate's aromatics intact for days instead of turning flat and cardboardy within 48 hours the way a loosely-lidded jar does.
Read the 10 Best Cold Brew Coffee Makers of 2026 guide →What earned OVALWARE the recognition
- A top pick in Brew Gazette's cold brew testing, earning its place specifically because it's the only brewer tested where nothing but borosilicate glass and stainless steel ever contacts the coffee.
- Independently verified consumer trust: the flagship 1.5L cold brew maker carries more than 13,500 ratings on Amazon at a 4.5-star average.
- Covered by The Kitchn, CNN, and The Spruce, and recognized by MoMA -- recognition earned outside of Amazon review counts. The Kitchn's own review praised the same airtight lid and easy-to-clean reusable filter our testing found.
- A deliberate, consistent design principle since founding in 2015 -- shaping gear after the oval form of the coffee bean and eliminating plastic wherever glass or steel can do the job instead -- rather than a generic kitchenware line stretched onto coffee.
- OVALWARE reports selling over 100,000 cold brew makers, evidence of a brand that built its identity as a cold brew specialist rather than a general housewares company that added coffee gear later.