Step No. 7 to the perfect espresso: The portafilter filter explained - What types of filters are there?
Key No. 6 to exquisite espresso: The ratio of water to coffee grounds in the portafilter.
Part 5 of our portafilter guide: The crema - How is it formed and why is it so important?
The 4th key to the perfect espresso experience: The right extraction temperature.
The third key to the perfect espresso: The correct grind for portafilter machines
