Is 15 or 20 bar better for espresso?
Is 15 or 20 bar better for espresso? Espresso is defined at around 9 bars of pressure. Some machines advertise 15–20 bar pumps, but that figure refers to maximum pump output, not the pressure used for brewing. The best espresso comes from a stable 9 bar; anything higher doesn’t improve flavour. The 30-second extraction rule […]
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