What is the 15-15-15 coffee rule?
Non-roasted beans will stale in 15 months. Roasted beans will stale in 15 days. Ground coffee stales in 15 minutes. Brewed coffee should be served within 15seconds. The 15–15–15 coffee rule explains why freshness matters at every stage of your coffee’s journey. Green coffee is best used within 15 months of harvest, roasted coffee tastes its best within 15 days of roasting, and once you grind your beans, you’ve got about 15 minutes before aroma and flavour start to fade.
What is the 80 20 rule for coffee?
The 80/20 rule for coffee states that 20% of the brewing variables contribute to 80% of the final flavour quality. Focus on water temperature and grind size because these primary factors dictate the success of your extraction process. The temperature of your water is what will matter most in determining a coffee’s flavor: Pour at a lower temperature (185 degrees) and you’ll extract fewer of the bean’s nascent flavor notes and end with a more bitter taste; pour at a higher temperature (205 degrees), and you’ll discover a coffee that’s extracted more .