At our cafe we use a 3 group linea and have always left spent coffee pucks in the portafilter between brewing to maintain temprature in the group. This is something we have done for quite sometime. Recently we have been having problems with our group screens warping and spitting water out the side. One person i have talked to thinks the two are related. Does anyone else leave the spent coffee in the portafilter between shots or has anyone had problems with their screens?
i dump as soon as possible, purge, wipe the portafilter with a dry rag, replace it clean. i've never had problems maintaining heat in the portafilter.
how often do you replace your group screens? they could also just be old.
If you give me a call 206-706-9104 x101 I can run you through what is occurring.
La Marzocco USA
Yes! great question, ive been wanting to poll people on that exact thing(keeping the spent puck in the portafilter) I recently went to La Marzoccos out of the box(in berkeley) and was wondering why a good portion of baristas didnt clean the portafilter after pulling a shot. I wasnt sure if it was laziness or if there was a reason. Any way, I echo everyone else and say dump the puck and clean between shots.
Reminds me of a barista that believes cleaning the machine regularly removes the valuable coffee oils that will flavor the coffee. Regardless of the coffee that he uses all his drinks taste the same.....rancid!
I am with Jared on this one.
This one actually has legit origins... much like the now-frowned-upon portafilter tap. Mr. Schomer advocated both a while ago.
BTW, there was a discussion like this about 2 years ago to the day, including contributions from some people that we haven't heard from in a while. A good read that comes to the same conclusion.
To me it doesn't make sense that the puck would maintain heat. If it's still there, then that means the heat has more "stuff" to try to keep warm. So I don't see the problem without it. Plus, if you purge before, it seems to be rendered useless. I also see a lot of value in cleanliness. But, I understand the though process.
*I don't know, just my opinion