Wanted to share this tip that I found online....
My 15 year old Starbucks (Saeco) espresso machine was taking forever to make a long espresso, so I finally decided to do something about it. It turned out that the portafilter basket was about 90% clogged with old grounds. So I found a needle and started punching out each hole. Realizing that this was going to take forever, I found the following suggestion
here which worked brilliantly.
Quote:
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The pin-holes are plugged with coffee fibre, which burns. Place the filter over a gas flame, either side, for 10 minutes, tapping it with tongs occasionally, and bingo... A CLEAN FILTER. All the minute coffee fibre plugs burn or pop out. Best to use a small coffee pot rack on top of your smallest hob gas burner for this. And metal tongs.
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I gave it a try and it really worked and took no more than 5 minutes.