This reminded me of a little story. First, know that I never drink coffee unless it is 12am and I'm still working on a paper (it'll be a coffee night tonight). That said, when I was in Sydney I couldn't find a place near my apartment that sold coffee 24/7, so I decided that I was finally going to learn how to use a french press. Months go buy, finals are around the corner, and I'm siting in my room working on a paper. On my way to the kitchen I see my flatmate and randomly say "ya know, i don't understand what the filter part is for. There never seems to be any coffee grounds left over." She looks at me and starts crying with laughter. Turns out, I was using instant coffee in the french press for months without realizing it. My roommate didn't say anything because she thought I just liked to make instant coffee in the french press just for the fun of it. Needless to say, I dont know the first thing about coffee haha