I am interested in this, but am not sure if I understand what it's for / how to use it. Is this one way to make "French Press" coffee, one cup at a time? If so, I want one, but need to know EXACTLY how to use it... how much coffee would you use per one cup, and how long would you let it "steep" or does it just run through the coffee, and that's it? How hot do you have the water? I know there was just a Bonavita electric water heater in a drop... should have bought that... how hot of water do you use?