How do you Aeropress users find it? Mine seem to be a bit hit and miss and often end up too bitter. Have tried various methods but never quite got it right!
Maybe you are putting the water in too hot? There isn’t really any technique involved, no more than a cafetiere. How many variations on coffee in, water in and squish can you manage? If you are pouring the water straight from a boiling kettle you may get some bitterness
I too found I was getting bitterness at first, then kind of worked out a process: boil kettle, pour a bit of water through paperfilter to get it to seat, let the kettle cool for a few mins before putting in inverted Aeropress, stir for a few seconds, leave for about a minute, press into cup = good coffee everytime. 🙂