This machine is the only way to make nitro cold brew coffee at home – and it’s on sale


Cumulus Coffee machine

Alison DeNisco Rayome/ZDNET

Cold brew fans know the process for making this type of coffee is completely different from hot coffee, and can be time-consuming to do at home. But the Cumulus cold brew coffee machine is designed to make only single-cup cold brew, nitro, and cold espresso in a process as easy as using a Keurig — and it’s the only way to make nitro cold brew at home.

The machine usually comes at a high price point of $695. But ahead of Mother’s Day, it’s 15% off with code MOTHERSDAY15, making it a great time to buy if you’re in the market for a high-end at-home cold brew machine.

Also: 5 kitchen tech splurges are totally worth it

I tried out the Cumulus cold brew machine at home, and was impressed by the design — it’s tall, but has a slim, stylish profile, and is extremely simple to use. You pop a proprietary pod filled with coffee concentrate into the cylinder at the top, and select from three options: still cold brew, nitro cold brew, or cold espresso. When you first add water to the machine, it takes about 15 minutes to cool it down. After that cooling period, it brews in about a minute, so if you fill it up before you go to bed at night, it’ll be ready for you to instantly brew when you’re ready for coffee. 

Also: This fancy automatic espresso machine made me drop my Dunkin’ habit

The nitro coffee option was the biggest standout: The machine infuses nitrogen gas into the cold brew coffee, which gives it a thick, smooth texture and foamy head — pretty much impossible to achieve at home any other way, and better than store-bought cans.

Cumulus Coffee machine

Alison DeNisco Rayome/ZDNET

The biggest downsides are the price, and needing to buy pods directly from Cumulus. I found the coffee to be extremely strong as well, so this won’t be replacing my De’Longhi Rivelia for everyday use (though they are very different machines with different purposes). But if you’re someone who frequently purchases a strong cold brew from a coffee shop, this could help cut down your costs over time.

If you’re in the market for a cold brew coffee machine, consider this deal for 15% off the Cumulus.

Also: This automatic espresso machine is like having my own barista, and it’s not by De’Longhi or Breville

How I rated this deal 

At 15% off, this deal gets a 3/5 editor’s rating — it isn’t the biggest discount, but for an expensive machine that rarely goes on sale, it’s still a solid one.

This deal expires on May 1, 2026.

Deals are subject to sell out or expire any time, though ZDNET remains committed to finding, sharing, and updating the best product deals for you to score the best savings. Our team of experts regularly checks in on the deals we share to ensure they are still live and obtainable. We’re sorry if you’ve missed out on this deal, but don’t fret — we’re constantly finding new chances to save and sharing them with you at ZDNET.com


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We aim to deliver the most accurate advice to help you shop smarter. ZDNET offers 33 years of experience, 30 hands-on product reviewers, and 10,000 square feet of lab space to ensure we bring you the best of tech. 

In 2025, we refined our approach to deals, developing a measurable system for sharing savings with readers like you. Our editor’s deal rating badges are affixed to most of our deal content, making it easy to interpret our expertise to help you make the best purchase decision.

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Recent Reviews


After being teased in the second beta, the new “Bubbles” feature is finally available in Android 17 Beta 3. This is the biggest change to Android multitasking since split-screen mode. I had to see how it worked—come along with me.

Now, it should be mentioned that this feature will probably look a bit familiar to Samsung Galaxy owners. One UI also allows for putting apps in floating windows, and they minimize into a floating widget. However, as you’ll see, Google’s approach is more restrained.

App Bubbles in Android 17

There’s a lot to like already

First and foremost, putting an app in a “Bubble” allows it to be used on top of whatever’s happening on the screen. The functionality is essentially identical to Android’s older feature of the exact same name, but now it can be used for apps in addition to messaging conversations.

To bubble an app, simply long-press the app icon anywhere you see it. That includes the home screen, app drawer, and the taskbar on foldables and tablets. Select “Bubble” or the small icon depicting a rectangle with an arrow pointing at a dot in the menu.

Bubbles on a phone screen

The app will immediately open in a floating window on top of your current activity. This is the full version of the app, and it works exactly how it would if you opened it normally. You can’t resize the app bubble, but on large-screen devices, you can choose which side it’s on. To minimize the bubble, simply tap outside of it or do the Home gesture—you won’t actually go to the Home Screen.

Multiple apps can be bubbled together—just repeat the process above—but only one can be shown at a time. This is a key difference compared to One UI’s pop-up windows, which can be resized and tiled anywhere on the screen. Here is also where things vary depending on the type of device you’re using.

If you’re using a phone, the current bubbled apps appear in a row of shortcuts above the window. Tap an app icon, and it will instantly come into view within the bubble. On foldables and tablets, the row of icons is much smaller and below the window.

Another difference is how the app bubbles are minimized. On phones, they live in a floating app icon (or stack of icons) on the edge of the screen. You are free to move this around the screen by dragging it. Tapping the minimized bubble will open the last active app in the bubble. On foldables and tablets, the bubble is minimized to the taskbar (if you have it enabled).

Bubbles on a foldable screen

Now, there are a few things to know about managing bubbles. First, tapping the “+” button in the shortcuts row shows previously dismissed bubbles—it’s not for adding a new app bubble. To dismiss an app bubble, you can drag the icon from the shortcuts row and drop it on the “X” that appears at the bottom of the screen.

To remove the entire bubble completely, simply drag it to the “X” at the bottom of the screen. On phones, there’s also an extra “Manage” button below the window with a “Dismiss bubble” option.

Better than split-screen?

Bubbles make sense on smaller screens

That’s pretty much all there is to it. As mentioned, there’s definitely not as much freedom with Bubbles as there is with pop-up windows in One UI. The latter allows you to treat apps like windows on a computer screen. Bubbles are a much more confined experience, but the benefit is that you don’t have to do any organizing.

Samsung One UI pop-up windows

Of course, Android has supported using multiple apps at once with split-screen mode for a while. So, what’s the benefit of Bubbles? On phones, especially, split-screen mode makes apps so small that they’re not very useful.

If you’re making a grocery list while checking the store website, you’re stuck in a very small browser window. Bubbles enables you to essentially use two apps in full size at the same time—it’s even quicker than swiping the gesture bar to switch between apps.

If you’d like to give App Bubbles a try, enroll your qualified Pixel phone in the Android Beta Program. The final release of Android 17 is only a few months away (Q2 2026), but this is an exciting feature to check out right now.

A desktop setup featuring an Android phone, monitor, and mascot, surrounded by red 'missing' labels


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For as long as Android phones have existed, people have dreamed of using them as the brains inside a desktop computing setup. Samsung accomplished this nearly a decade ago, but the rest of the Android world has been left out. Android 17 is finally changing that with a new desktop mode, and I tried it out.



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