It's true that the French Press is not the first brewer you would think of in order to brew an espresso. The traditional way of brewing a classic espresso is via a machine called espresso machine.
I personally would not use a French Press to try and make an espresso, I would only be disappointed with the result as it wouldn't be close to a real espresso at all.
The French Press is designed to brew only coarse coffee grinds. A finer espresso has to be brewed in something like an espresso machine or a moka pot. If you don't have an espresso machine or a moka pot you can even use an Aeropress.
Here is how:
- Place a coffee filter in the chamber and screw on the cap
- Add 2 scoops of coffee to the chamber
- Grind your coffee beans to a medium/fine grind
- Wet your grounds with 55 ml (or about 3 ounces) of hot water at 205 degrees Fahrenheit
- Stir the grounds for about 10 seconds
- Put the plunger in the up position and let it bloom for 30 seconds.
- After 30 seconds start plunging slowly, and after 35 seconds plunge all the way down.
If you're looking for an espresso like result, I would not recommend using a French Press but at least there are some other alternatives than the Moka Pot and the Aeropress if you want something espresso-like!