Gently remove your French press from the scale and place it on your counter. Press the filter down. If it’s hard to press, that means your grind is too fine; if the plunger “thunks” immediately down to the floor, it means your grind is too coarse. The sweet spot, pressure-wise, is 15–20 pounds. Not sure what this feels like? Try it out on your bathroom scale.
When you’ve finished pressing, serve the coffee immediately. Don’t let it sit, as this will cause it to continue brewing and over-extract.