this post was submitted on 30 Jul 2024
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@rcbrk Group head?
The part of an espresso machine where the water passes through the coffee. Called a brew group in the automatic machines (and they can get mouldy and horrible). Should at least remove the shower screen or filter screen from the group and scrub out the old rancid coffee tar with a cloth/toothbrush.
Pouring a shot of plain water should smell and taste like clean excellent hot water.