portafilter

As a preposition ec

is at.

As a noun portafilter is

a holder for ground espresso coffee that is attached to a group in an espresso machine to produce espresso.

As nouns the difference between backflush and portafilter

is that backflush is a temporary reversal of the flow of fluid, especially of liquid through a membrane while portafilter is a holder for ground espresso coffee that is attached to a group in an espresso machine to produce espresso.

As a verb backflush

is to cause a backflush.

As nouns the difference between coffee and portafilter

is that coffee is a beverage made by infusing the beans of the coffee plant in hot water while portafilter is a holder for ground espresso coffee that is attached to a group in an espresso machine to produce espresso.

As an adjective coffee

is of a pale brown colour, like that of milk coffee.

As a verb coffee

is to drink coffee.

As nouns the difference between espresso and portafilter

is that espresso is a concentrated coffee beverage brewed by forcing hot water under high pressure through finely ground coffee while portafilter is a holder for ground espresso coffee that is attached to a group in an espresso machine to produce espresso.