World’s Smallest Coffee Machine Makes Espresso in 30 Seconds

If your office coffee machine only spits out weak, lukewarm brown water—or worse, just powdered creamer—you’ve probably fantasized about a better way. Maybe you’ve even tried to make espresso at your desk, only to be defeated by bulky machines and complicated setups. What if you could get a real shot of espresso—real crema, real coffee flavor—in less time than it takes to microwave a burrito?

Piamo, the world’s smallest coffee machine, makes a single shot of espresso in just 30 seconds using nothing but your microwave. No outlets, no filters, just ground coffee, water, and heat.

How Piamo Turns Your Microwave Into an Espresso Maker

The Piamo isn’t your conventional coffee machine. Designed by German coffee enthusiast Christoph Meyl, it looks like a regular mug—but it’s built in three clever parts: a cup, a built-in grinder chamber, and a water reservoir. Instead of plugging in, you load it with freshly ground coffee and water, pop the whole thing in the microwave, and let heat turn the water into steam. That steam forces its way through the grounds, extracting a true espresso right in the cup. In around 30 seconds, your espresso drips into the base, ready to drink.

What Makes Piamo Different From Other Coffee Makers?

Unlike drip machines, French presses, or even portable espresso makers, Piamo doesn’t rely on electricity or batteries. Its entire brewing process is driven by microwave-generated steam. The design is intentionally minimal: it’s made entirely from food-grade plastic, is totally portable, and disassembles for easy cleaning. The whole unit goes straight into the dishwasher when you’re done. It’s aimed squarely at coffee drinkers who want a quick, decent espresso without fussy equipment or counter clutter—especially in places like offices, dorm rooms, or hotel rooms where a proper espresso setup isn’t an option.

Who Designed Piamo—and Why?

Christoph Meyl, a German coffee lover, created Piamo out of frustration with his office coffee options. Tired of low-quality hot drinks, he envisioned a simple, fast alternative to both instant coffee and clunky machines. With encouragement from family, he turned his idea into a working prototype. While Piamo isn’t designed to replace high-end home espresso machines, it does offer a clever alternative to office vending machines and instant powders—especially for espresso fans who value convenience. Meyl also positioned it as a more affordable and portable option compared to traditional capsule or machine-based systems.

How to Use Piamo Step by Step

Using Piamo is straightforward, though it does require pre-ground coffee (it doesn’t grind beans itself—it has a separate chamber where you load already-ground coffee):

• Fill the water reservoir with the desired amount of water.
• Add your freshly ground coffee into the dedicated grinding chamber.
• Assemble the three parts: the cup, the coffee chamber, and the water tank.
• Place the assembled Piamo in your microwave.
• Heat for around 30 seconds—exact time may vary based on your microwave’s power.
• Remove carefully—the espresso will have dripped into the cup portion.
• Enjoy your espresso, then place the entire Piamo in the dishwasher for cleaning.

Frequently Asked Questions

Does Piamo really make espresso in 30 seconds?

Yes. According to reports, Piamo uses microwave-heated steam to extract espresso from coffee grounds in roughly 30 seconds. The entire process—from heating to dripping—is complete in about half a minute.

What kind of coffee do you use with Piamo?

Piamo requires pre-ground coffee. You load it into a built-in chamber before microwaving. The source doesn’t specify grind size, but for best results with espresso-style extraction, a fine to medium-fine grind similar to what you’d use in a traditional espresso machine is ideal.

Is Piamo safe to use in any microwave?

The article doesn’t specify microwave wattage or safety details, but Piamo is designed to be heated in a standard microwave. As with any microwaveable plastic, it’s advisable to follow the manufacturer’s guidance to avoid warping or damage.

Can you make more than one espresso at a time with Piamo?

No. Piamo is designed to brew a single serving of espresso at a time—the cup portion holds one standard shot. For multiple servings, you’d need to repeat the process.

How do you clean Piamo?

Cleaning is simple: the whole device is dishwasher safe. Just disassemble the three parts—cup, coffee chamber, and water reservoir—and put them in the dishwasher after use.

Recommended FrontStreet Coffee Beans for Espresso

For use with quick-brew devices like Piamo, FrontStreet Coffee’s Classic Blend delivers a balanced shot with notes of dark chocolate and caramel. The Black Cocoa Blend emphasizes bold cocoa and roasted nut tones, ideal for espresso lovers wanting depth. Both are freshly roasted and grind-ready for espresso extraction. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.