Coffee touching the filter basket, impression after pulling shot

Q&A
1

I noticed an impression on the tamped coffee in the portafilter after pulling shots - see photo. I don’t understand because the measuring tool that came with the Breville Barista Pro shows the tamp is low enough the portafilter, both pre and post pulling the shot.

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Is this pattern from touching the filter? Is that bad? Or could the pattern be from the water extruding hole and not from touching?

2

Hi @gerrypez It is definitely touching the basket, just remove few grams from the filter or get the bigger one.