An improbable invention, and a surprisingly good cup of coffee.
A man who made flying rings decides to build a coffee maker. Twenty years later, people are flying across the world to compete over who can use it best. That's the short version of the AeroPress story, and it sounds like something a particularly enthusiastic product manager would make up after two drinks. Except it actually happened.
The AeroPress is not a beautiful old Italian machine. It isn't a heavy brass object you'd leave on the counter to impress visitors. The original looks like a bit of laboratory equipment that escaped from a school science cupboard. Two cylinders, a plunger, a cap and a filter. It's almost aggressively ordinary.
Which is why its success is interesting. Strip away the theatre and you're left with a clever answer to an everyday problem: how do you make one really good cup without needing an espresso machine, half a kitchen or an advanced qualification in coffee extraction?
The man who invented it was making flying rings.
Alan Adler was an engineer and inventor whose earlier work included boats and the Aerobie flying ring. He understood materials, air pressure and the peculiar satisfaction of getting an object to perform better than anyone expected. His own company's account says he started investigating single-cup coffee brewing in 2003, after becoming frustrated with the results from home machines.
More than thirty prototypes later, he introduced the AeroPress at Coffee Fest in Seattle in November 2005. It was an odd product for a company known for flying toys, but the underlying thought made sense: control the water, coffee and time, then use a modest amount of pressure to separate the drink from the grounds.
In 2008, coffee professionals Tim Wendelboe and Tim Varney helped start the World AeroPress Championship in Oslo. Three people competed. Three. It's a suitably ridiculous beginning for a competition that would eventually become an international fixture. And it says something useful about the brewer: the recipe matters enough that people can argue about it for years.
The range has since grown well beyond the original press. There have been travel-focused models, a larger XL, clear versions, metal filters and more premium materials. The essential mechanism has hardly changed. That is usually a sign that the fundamental idea was sound.
What the AeroPress actually does.
Think of it as immersion brewing with a filtered, assisted finish. Ground coffee and water spend time together inside the chamber, as they do in a cafetière. Then you gently push the plunger, forcing the brewed liquid through paper or a metal filter into a cup.
It is not an espresso machine. The pressure is far below the roughly nine bars associated with conventional espresso, and you shouldn't expect an identical thick, concentrated shot with natural crema. You can certainly make a short, strong coffee and add milk to it. Just don't buy an AeroPress expecting a proper espresso machine in a plastic tube.
What it does offer is control. You can choose grind, dose, water temperature, steep time and filtration, and you can change one without necessarily rebuilding the entire method. Paper filters usually produce a cleaner cup with less sediment and oil. A metal filter may leave more texture and fine particles. Neither is morally superior.
A dependable first recipe.
Ignore the internet's eleven-stage championship rituals for a moment. Start here, using the normal upright method with a standard-size AeroPress. This is a suggested starting recipe, not a claim of an independently tested Charred Kettle result.
- Prepare the brewer. Put a standard AeroPress paper filter in the cap, attach it securely to the chamber and stand it on a sturdy, stable mug suitable for the pressure. Avoid thin or delicate glass.
- Weigh 15 g of coffee. Grind around medium-fine — slightly finer than many V60 starting points, but not espresso-powder fine. The setting depends on your grinder.
- Add 230 g of water. Start around 90–94°C / 194–201°F for a medium or lighter roast; use cooler water if a darker roast tastes harsh. These are editorial starting points, not manufacturer-mandated temperatures. Pour steadily and make sure all the grounds are wet.
- Give it a gentle stir. Insert the plunger just into the top of the chamber to reduce drip-through, without pressing. Allow roughly 90 seconds from the start of pouring.
- Press gently. Use steady, controlled pressure over about 20–40 seconds. You aren't trying to win an arm-wrestling contest. If it takes serious force, check the grind and filter.
- Stir the cup and taste it. Let it cool a little before deciding what to change. You should have an approachable, fairly clean brew to work from.
AeroPress's own signature recipe differs: its current guidance begins with around 16–18 g of coffee, medium grind, approximately 85°C / 185°F water and a shorter steep. That's not a contradiction. The brewer works across a large range, and your beans and preferences matter. Start somewhere repeatable, then follow your tongue.
Where the cleverness ends and the fiddling begins.
If the cup tastes thin and sharply sour, try one small step finer or a little more steep time, holding the rest steady. If it's drying, muddy or unpleasantly harsh, try slightly coarser or less agitation. If it tastes good but not quite strong enough, consider a little more coffee for the same water. And remember that roast, bean quality and water can all make a cup taste wrong even when the technique is sensible.
There are elaborate recipes involving multiple pours, unusual temperatures, extra filters and carefully timed stirring. Some work beautifully for particular coffees. Others are a reminder that give an enthusiast six adjustable variables and he will eventually invent a seventh.
One method that deserves caution is inverted brewing, where the brewer is assembled upside down and later flipped. It became popular because it prevents early liquid from escaping. AeroPress itself strongly discourages it: a hot, unstable cylinder can tip or spill and cause burns. Use the normal upright method; for longer immersion, its plunger seal or a compatible flow-control cap can help limit dripping without turning the apparatus upside down.
The review: what's genuinely good, and what's annoying.
The good: it's compact, relatively inexpensive compared with an espresso setup, easy to rinse, forgiving with different coffees, and useful when making one drink at a time. It needs no mains-powered brewing machine. Heat water on a hob or suitable camping stove, and a hand grinder completes the setup.
The less good: a standard AeroPress is principally a single-cup device, there's a consumable filter to remember if you use paper, and pressing directly into a flimsy vessel is a bad idea. The process has more loose parts than a kettle and mug. If you routinely make coffee for four people, you'll spend a fair amount of the morning pressing and rinsing.
It won't replace a real espresso machine for somebody chasing espresso texture and crema. Nor does it deliver the larger, batch-brew convenience of a dedicated filter machine. And, though there's charm in the plain engineering, the original plastic press will never look like a polished copper showpiece.
We haven't carried out a Charred Kettle side-by-side product test or durability trial, so this is an assessment of the design, the published instructions and what the method can reasonably do — not a fictitious tale about years of ownership.
Should you buy one?
For somebody who wants consistently good manual coffee without a fortune in equipment, the AeroPress makes a very convincing case. I'd put it high on the shortlist alongside a V60 and a cafetière, rather than pretending it's the only brewer a serious coffee drinker needs.
Choose it if you brew one cup, enjoy tinkering with taste and value easy cleaning. Choose something else if you're trying to serve a crowd or make true espresso. And if you already own one, the smartest upgrade might be buying interesting beans and learning your grinder rather than collecting another cap in a different colour.
For that, read our guide to dialling in grind by taste. The AeroPress is an excellent place to learn because it gives you enough control to notice what you're doing without requiring you to build a small laboratory on the kitchen counter.