AeroPress Basics: Standard and Inverted Recipes
The AeroPress is unusual in combining immersion with pressure. That gives it a very wide range (the same beans can produce quite different cups), but the same freedom makes it hard to know what to hold constant.
Immersion and pressure together
Pour-over is percolation: water passes through the bed and drains away. A French press is immersion: coffee sits in water. The AeroPress does both. Coffee steeps for a set time, then a plunger applies pressure to push everything through.
This has real advantages. During immersion, water and coffee are in even contact, so there is far less risk of the channeling that plagues pour-over. The pressure stage finishes quickly, which limits over-extraction. Beginners get consistent results more easily as a result.
The paper filter also sits very close to the coffee, catching fines and oils. The cup lands somewhere between the weight of a French press and the clarity of a filter brew.
Standard versus inverted
There are two ways to use it. Standard is the method in the instructions: the chamber sits on the cup and you pour water in. Inverted means assembling it upside down with the plunger at the bottom, brewing, then flipping it onto the cup to press.
The difference is control over steep time. In the standard orientation water starts dripping through the filter as soon as you pour. Inverted, nothing escapes, so the immersion time is exactly what you set.
The trade-off is that flipping a chamber of hot water carries a scalding risk. Start standard, and move to inverted when you want precise control over steep time.
A baseline recipe
There is no single official AeroPress recipe: competition-winning ones differ wildly, which tells you how wide the range is. Still, you need somewhere to start.
The ratio is stronger than filter (1:13 to 1:15) because brewing concentrated and diluting afterwards is a common approach. To drink it neat, open the ratio out to about 1:15.
Step by step
This is the standard orientation. Inverted follows the same sequence with the flip added at the end.
Common failures
The AeroPress fails in a fairly narrow set of ways, and they are easy to recognize.
The best brewer for experiments
The real advantage of the AeroPress is iteration speed. A cup takes two minutes and cleanup is trivial, so you can make several in a sitting and compare them. That is impractical with pour-over.
Keep to one variable at a time. Brew three cups at one minute, ninety seconds and two minutes of steep and taste them together, and you will learn in one sitting how that variable behaves with your coffee.
Record the conditions and the result each time and within a few weeks you have your own baseline. The AeroPress is a brewer where your own notes are far more useful than anyone else recipe.