KeepCup Brew Cork: the glass reusable coffee cup we actually use
Last updated: 19 July 2026
In short
The KeepCup Brew Cork is a tempered-glass reusable coffee cup wrapped in a natural cork band. It is the cup we reach for daily and our top pick in our best reusable coffee cups guide. It reads as a proper cup, so baristas fill it without hesitation, the silicone lid seals well for the commute, and it goes straight in the dishwasher. The 12oz sits at around £24. It contains affiliate links, so if you buy through them we may earn a small commission at no extra cost to you.
What is the KeepCup Brew Cork?
The KeepCup Brew Cork is the glass version of KeepCup's original reusable cup, finished with a band of natural cork. The body is fully tempered glass, so it does not taint the taste of your coffee the way some plastics and metals can. KeepCup launched the world's first barista-standard reusable cup back in 2009, and the Brew line brought that same fit to glass. The cups are hand-assembled, and the cork is made from recovered material, upcycled from wine-cork production.
Key features
- Tempered glass body that keeps your coffee tasting like coffee, with no plastic or metallic aftertaste.
- Natural cork band that is heat-resistant, so you can hold it full of a hot drink comfortably. It is removable too.
- Splashproof press-fit lid in soft silicone that seals well for the walk to your desk.
- Barista-standard sizing across 6oz, 8oz, 12oz and 16oz, so it fits under the group head and matches a café's own cup volumes.
- Dishwasher friendly, which for us is the deciding factor over cups that need hand washing.
Why we rate it
In our experience, the Brew Cork nails the one thing many reusables miss: it looks like a cup, not a flask. That means no confusing pause at the counter, and no barista handing it back full of water. The glass stays clean and neutral over years of use, and the cork band is a genuinely nice thing to hold. The honest trade-off is that glass can break if you drop it on a hard floor, so it suits careful hands more than a chaotic school run. For that, a stainless cup like Chilly's is tougher. For taste, looks and longevity, though, the Brew Cork is the one we keep coming back to.
Who it suits as a gift
It makes a lovely, lasting present for a coffee lover, a new-home mover cutting down on takeaway cups, or anyone trying to use less single-use plastic. Pair it with a bag of good beans and you have a complete gift. For more ideas, our sustainable gifts guide has plenty of low-waste options.
Frequently asked questions
Is the KeepCup Brew Cork dishwasher safe?
Yes, the Brew glass range is dishwasher safe, which is a big part of why we rate it. We put ours through the dishwasher constantly and it comes out clean. Just place it gently, since the tempered glass can still break on a hard knock.
What size KeepCup should I get?
The 12oz (340ml) is the café standard for a latte or flat white, and it is the one we use daily. Go 8oz for a shorter coffee, or 16oz if you like a large or a cold brew.
Does the glass make the coffee taste better?
In our view, yes. Glass is neutral, so it does not add a plastic or metallic note. That is the main reason we prefer it over some insulated metal cups, even though those keep drinks hotter for longer.
How much does the KeepCup Brew Cork cost?
The 12oz Brew Cork sits at around £24, with smaller and larger sizes priced up and down from there. Prices move, so check the current figure before you buy.
The verdict
The KeepCup Brew Cork is our favourite everyday reusable coffee cup: clean-tasting glass, a warm cork band, a lid that seals, and a shape a barista instantly understands. It is not indestructible, but treat it with a little care and it will outlast a decade of disposable cups. You can read how it compares to Chilly's, Frank Green, JOCO and more in our full reusable coffee cups roundup, and you can find current KeepCup pricing and the full range on the official KeepCup site.
This page contains affiliate links. If you buy through them we may earn a small commission at no extra cost to you. It does not change our view. Prices and availability can change.
More from CoolCuration
- Best Reusable Coffee Cups UK 2026: our full ranked roundup, where the Brew Cork takes the top spot.
- Gifts for coffee lovers: a whole guide for the caffeine obsessive in your life.
- AeroPress steel coffee maker: brew a proper cup at home to fill your KeepCup with.
- Exhale carbon-negative coffee: sustainable beans that pair perfectly with a reusable cup.
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