Everybody has a plunger somewhere. Mine has a big crack down the side. I don’t use it. Plunger coffee is underrated because most people just follow the instructions on the box. You can have it so much better though, simply by following these instructions from former world barista champion James Hoffman.
The big take home tip, if you don’t want to watch the video, is to first have a ratio you like (coffee to water) and second to scoop the sludge off the top of the coffee before you plunge.
James Hoffman pretty much follows the procedure put together by another former World Barista Champion, Tim Wendelboe.