Most coffee grounds you buy in the supermarket and ground quite fine for filter coffee. It is important with french presses that you use a medium/course ground coffee. Better still, buy whole beans and invest in a hand grinder, where the coarseness can be set manually. grinding right before making the coffee will ensure the freshest grounds. Investing in a coffee measuring scoop will help ensure you measure out the same amount of coffee each time. A coffee scoop delivered 1/5 ounce (6 grams) per scoop. If I am making 1 cup of coffee I use 2 scoops, because I like my coffee strong, but generally it is 1 – 2 scoops per cup, depending on your preference. Play around until you work out what is right for you. Remember, when I say 1 cup, I am not talking about a little European cup (Expresso), I mean 5-6 ounces per cup.