As BMMF says it stops it getting stewed. Longer extractions allow more time for bad flaours to come through. If you want it strong, up the amount of coffee or go for a different bean.
@jdp started
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As BMMF says it stops it getting stewed. Longer extractions allow more time for bad flaours to come through. If you want it strong, up the amount of coffee or go for a different bean.