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What to do with portafilter between drinks

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  • #16
    By coincidence, just the other day I accidentally left the puck in as I was distracted taking photos of my coffee #hipsterproblems [emoji848]

    After about 10-15 minutes, the puck was significantly dried out and left quite a bit of residue on the basket when I did knock it out. After soaking in water it rinsed pretty clean to the naked eye, but not something I'd want to be doing often.

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    • #17
      Originally posted by Barry O'Speedwagon View Post
      I would imagine that it is true, but exactly how great an effect it has I couldn't say. Obviously, the amount of time that you are applying force (and changing force and being exposed to changing temperature) to the group seal affects the wear and tear on it.
      Completely agree here with Barry and just to add to it if you're only gently putting the PF back in place (as opposed to locking it in as if you were about to pull a shot) I can't imagine any measurable reduction in seal life. Typically the biggest effect on elastomer (fancy term for rubber!) life is pressure and temperature fluctuations which if you're only lightly putting the PF back in place is insignificant.

      My thoughts on this are purely from a Materials Science background and as far as I'm aware no peer reviewed scientific studies have ever been conducted on this

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      • #18
        Originally posted by Johnd80 View Post
        If you leave the puck in you will eventually get mould growing.
        Something tells me they're not suggesting you leave the puck in situ long enough for an ecosystem to form John.

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        • #19
          What to do with portafilter between drinks

          Beats the hell outta me why you'd leave it any longer than necessary. Lots of schysters claiming to be experts in the specialty coffee world, I guess.

          I once had the pleasure of a "second" espresso extracted from the same puck - the "barista" had been "trained" to do it that way. [emoji57]

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          • #20
            Originally posted by Magic_Matt View Post

            I once had the pleasure of a "second" espresso extracted from the same puck - the "barista" had been "trained" to do it that way. [emoji57]
            Ah... so _that's_ what a double is!

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            • #21
              In my experience the people who recommend leaving the puck in the handle are either people who started as a barista several decades ago, or Italian backpackers working as baristas.
              I believe it is a hangover from the days of lever machines, before 3-way solenoid valves, where there was no facility built into machines to 'vent' the remaining water pressure above the puck after extraction.
              Hence, if the group handle was removed to knock out the puck immediately after a shot was pulled, the remaining water pressure caused the machine to 'sneeze' hot water and grounds from the handle as it was removed from the group.
              By leaving it in the head until it was time for the next shot, it allowed the remaining pressurised water time to slowly dissipate through the puck.

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              • #22
                Originally posted by MorganGT View Post
                In my experience the people who recommend leaving the puck in the handle are either people who started as a barista several decades ago, or Italian backpackers working as baristas.
                I believe it is a hangover from the days of lever machines, before 3-way solenoid valves, where there was no facility built into machines to 'vent' the remaining water pressure above the puck after extraction.
                Hence, if the group handle was removed to knock out the puck immediately after a shot was pulled, the remaining water pressure caused the machine to 'sneeze' hot water and grounds from the handle as it was removed from the group.
                By leaving it in the head until it was time for the next shot, it allowed the remaining pressurised water time to slowly dissipate through the puck.
                Quite possibly Morgan, sounds logical to me, anyone who has experienced the dreaded portafilter sneeze will know exactly what your talking about.

                I once blasted a puck all over a friends pristine kitchen, I was embarrassed, they were less than impressed, big cleanup required, wont do it a second time.

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                • #23
                  Is that a Gaggia Evoluzione Yalta? I had one of them do that to me when I took it on holidays as the portable option but hadn't used it before. Lesson learned; travel with full setup or not at all.

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                  • #24
                    Originally posted by level3ninja View Post
                    Is that a Gaggia Evoluzione Yalta? I had one of them do that to me when I took it on holidays as the portable option but hadn't used it before. Lesson learned; travel with full setup or not at all.
                    No idea what it is L3N, just a pic I found on Google.

                    The machine I experienced the sneeze with was a LaPavoni.

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                    • #25
                      Originally posted by Magic_Matt View Post
                      I once had the pleasure of a "second" espresso extracted from the same puck - the "barista" had been "trained" to do it that way. [emoji57]
                      Wow, and I thought I had it bad seeing the "barista" making my long black by pulling a ~200 mL shot!

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                      • #26
                        Originally posted by Yelta View Post
                        No idea what it is L3N, just a pic I found on Google.

                        The machine I experienced the sneeze with was a LaPavoni.
                        Ah fair enough, I was impressed you'd snapped a picture.

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                        • #27
                          It even said it in the training manual but I can't find it atm to take a photo. Any who, from all the tips here the portafilter is going back in clean!

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                          • #28
                            Originally posted by Uji86 View Post
                            It even said it in the training manual but I can't find it atm to take a photo. Any who, from all the tips here the portafilter is going back in clean!
                            So! there ya go, don't believe everything you read.

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