Understanding the AeroPress Brewing System
The AeroPress has been a favorite brewing method since it was invented in 2005 by engineer Alan Adler.
As the plunger is pressed, air pressure increases the speed of the brewing process, which reduces the acidity and bitterness found in longer-brew time methods.
As the brew passes through a paper micro filter, coffee grinds, grit, and bitter oils are filtered out to achieve a smooth mouth-feel and signature AeroPress flavor.
Lightweight, durable, and endlessly travel-friendly, it’s beloved by coffee nerds and campers alike. We recommend the AeroPress for coffee that’s sweet, full-bodied, and clean. This versatile device combines pressure, immersion, and filtration to create a unique extraction method that with the right grind size, water ratio, and timing, this little brewer can make an incredibly balanced cup in just a few minutes.
The AeroPress makes a concentrated coffee - similar to an espresso.
Standard Method: Mastering the Original Technique
The regular AeroPress method is the one Alan Adler, the inventor of the AeroPress, originally designed. It’s the upright method printed in the instructions that come with every AeroPress coffee maker. Begin by placing an AeroPress filter in the basket, attach the basket to the brew chamber, and set the brewer on top of a carafe or mug.
Rinse the paper filter. This will ensure no papery taste resides in the brew, and it will also heat the brewer.
For the brewing process, begin with our basic recipe: 15g coffee, 220g water, medium-fine grind, and 200°F water.
Pour 220g of water (to about the No. 4 mark on the brew chamber) within about 10 seconds.
Stir to fully saturate the coffee grounds and begin the AeroPress extraction.
Carefully insert the plunger into the top of the brew chamber and pull up slightly to create a pressure seal. Let the coffee steep, but don’t plunge yet.
At 1:15, remove the plunger and give the coffee slurry another quick stir. Replace the plunger and gently press down with steady pressure, stopping when you hear a hissing sound.
The total AeroPress brew time should be just under two minutes.
Inverted Method: Advanced Control and Immersion
The inverted method was born from the user community’s desire for total control. By assembling the AeroPress upside down—with the plunger inserted partway into the chamber from the start—you create a sealed vessel. You then add your coffee and water, allowing the grounds to steep for a precise duration without any premature drip-through.
This is a full immersion brew, much like a French press.
Control over steep time. Since water doesn’t drip through the paper filter, you can let the coffee and water steep as long as you want.
Full immersion brewing. Grounds and water stay in contact, giving you a richer, more balanced cup of AeroPress coffee. However, we strongly discourage using this method as it can cause the coffee maker to be less stable and prone to mishaps that expose the user to potential burns from hot liquid. Despite safety concerns from the manufacturer, according to Zachary Crockett’s article “The Invention of the AeroPress”, about half of the AeroPress World Championships winners use the inverted method.
Brewing Variables and Recipe Development
Understanding the key variables allows you to dial in your perfect cup. The standard ratio for most methods is around 1:16 (1 gram of coffee for every 16 grams of water), but when it comes to AeroPress, folks like it stronger – the original AeroPress recipe recommends 1:6! However, most modern recipes use ratios between 1:12 and 1:16 for more balanced extraction.
AeroPress recommends a super fine grind—almost as fine as you would use with espresso. Paired with a short brew time, this kind of grind works best. Yet for variations that involve a longer immersion, we’ll need to go coarser. Medium-fine to medium-coarse is standard.
Short brew times are pretty much the norm with the AeroPress. Even with the inverted and immersion variations, AeroPress brew time is usually in the 2–3 minute range.
Water temperature deserves special attention. The recommended AeroPress recipe calls for an extremely low temperature—around 175˚ F. This is a significant change that, we feel, doesn’t give us the best results. Coffee brewed at these lower temps tends to taste flat, with very little acidity. Most specialty coffee shops recommend A good starting point is ~175°F (80°C) for dark roasts and ~185°F (85°C) for medium or light roasts.
Troubleshooting Common Brewing Problems
When your coffee tastes off, understanding extraction principles helps identify solutions. If your coffee tastes bitter you’re probably extracting too much flavour (‘over extracting’). Try grinding your coffee a bit coarser or, if that isn’t an element you can control, start plunging your Aeropress earlier (leaving the grounds in immersion for a shorter time).
If your coffee tastes sour, acidic or ‘salty’ this is often a sign that your coffee is ‘under extracting’. If you can, grind your coffee a bit finer to speed up the extraction.
Plunging difficulties indicate grind size issues. Your Aeropress should be pretty hard to plunge, taking around 30 seconds to depress fully. If the pressure inside the Aeropress becomes too great you may find it nearly impossible to press down though - try grinding your coffee coarser to slow down the extraction.
With more surface area covered, the finer grinds create greater resistance and pressure in the chamber. If plunging takes more than 30 seconds to complete, try grinding a little coarser next time and see if this helps.
For weak coffee, it’s recommended to adjust both your coffee-to-water ratio and grind size. The ideal coffee-to-water ratio for the AeroPress is around 1:15 (1 gram of coffee for every 15 grams of water). If your coffee is too weak, try using more coffee or less water to achieve a stronger brew.
In terms of grind size, a finer grind will slow down the brewing process and allow for more extraction, resulting in a stronger and more flavorful cup of coffee. For the AeroPress, a medium-fine grind is recommended, similar to the texture of table salt.
Competition Insights and Advanced Techniques
World AeroPress Championship recipes reveal the device’s versatility. The World AeroPress® Championship is a global coffee-making competition, designed to find the world’s best cup of AeroPress coffee. Each season is comprised of a series of regional and national competitions, run by independent hosts across 60 countries, which culminates with the World AeroPress Championship final. Recent winning recipes show remarkable diversity in approach, from 18g dose with Flow Control Filter Cap, 2x Paper Filters, grinding at 31 clicks and sifting at 200um, using 125ppm water at 84°C to inverted methods with multiple stirring patterns.
Professional baristas emphasize consistency and precision. World AeroPress Championship recipes often emphasize not pushing every last drop out. As soon as you hear the “hiss” of air, stop pressing to avoid over-extraction. Many champions also focus on water quality and precise timing. If you take a look at the recipes from past years of the AeroPress World Championship, no two winning recipes are identical, and contestants toyed with every single brewing variable to make the best cup possible.
The key to mastering AeroPress brewing lies in understanding that the AeroPress is harder to mess up than other coffee brewing methods. Start with a solid foundation recipe, then experiment systematically with one variable at a time to develop your signature style.