káva PrimaCafé - česká pražírna výběrové kávy

I tried to compress the puck as much as possible to emulate a blind portafilter and see how the OPV is really set at and the result is 16+ bars: https://youtu.be/LRXkeRCVBfs The problem is that the optimal brew ratio happens at 16+ bars as well (16g in to 32g out in 20-30s). It appears to me that s...