Espresso and French press side by side
| Espresso | French press | |
|---|---|---|
| Pressure | High pressure forces the water through (9 ± 1 bar) | None: the plunger only separates grounds |
| Grind | Fine, like table salt | Coarse, like rock salt |
| Time | About 20 to 30 seconds | About 4 minutes |
| Ratio | About 1:2 coffee to drink (see the espresso ratio tool) | 1:10 to 1:16 (NCA) |
| Crema | Yes: the layer 'unique to espresso' | No |
| Caffeine per fl oz | About 63 mg (NCA) | 12 to 16 mg for brewed coffee (NCA) |
Sources: Wikipedia, Espresso and the NCA espresso and French press pages, last checked 2026-11-04.
Why the pressure matters
Wikipedia says crema is unique to espresso and ties it to water under very high pressure, which a plunger cannot supply. Early machines that only reached about 1.5 bar were, per the same article, "too little to produce a drink that would be considered espresso today". Pushing the plunger harder does not change that.
What to do instead
For a stronger French press, use the dense end of the NCA range, 1:10: see French press ratio. If you want real espresso, a pump machine is the route: start with the budget espresso setup checklist, and use the espresso ratio calculator once you have one. Caffeine in a shot is covered in caffeine in an espresso shot. A moka pot is another stovetop option: see the moka pot guide.