Any volume of water. 60 grams of coffee per 1 liter of water. Brewing time 4-6 min.

For the French press, we use the coarsest grind. It has a grain size close to that of ground buckwheat. The coarse grind is used because the French press has a metal strainer that filters the coffee. This screen is quite large and the metal allows the fine particles to pass through.
The average extraction time is 4-6 minutes.