https://angelscup.com/blog/taste/coffee-extraction-sour-vs-bitter/
Is your portafilter already full? How many g of coffee in it?
I'm using small doses (12-15g) as my machine is a bit crap. I understand this may be a limiting factor.
Can you add a few grams more?
@Nef started
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https://angelscup.com/blog/taste/coffee-extraction-sour-vs-bitter/
Is your portafilter already full? How many g of coffee in it?