Brew Guides How to make the perfect French Press. The press pot, or French Press, offers direct infusion for full bo.d coffee. It’s an ideal companion for dark roasts, bringing out rich, complex flavors..The Right Way to Make French Press Coffee Any finer and you’ll end up with a cup of bitter, undrinkable coffee. Put grams roughly tablespoons of that cogrind in the bottom of the .French Press Coffee Ratio. W.ver size of French Press you use, a good rule of thumb is to follow a ratio of coffee to water. So for every gram of coffee, add grams of water, which converts to about tablespoon of coffee for every cup of water. Experiment from there to find the ratio that works for your taste..The BIGGEST mistake so many newbies make is that they buy their french press then just go to the supermarket and buy a can or bag of ground coffee. It doesn’t work. That coffee is ground too fine. This is why you HAVE to grind the coffee yourself using a burr grinder. The burr grinder grinds the coffee COfor use in the french press..