Backflush vs Portafilter - What's the difference?
backflush | portafilter |
A temporary reversal of the flow of fluid, especially of liquid through a membrane
To cause a backflush.
A holder for ground espresso coffee that is attached to a group in an espresso machine to produce espresso.
A similar-shaped device but without a bottom opening, used to backflush or clean an espresso machine.