Similarly, a very fresh bean with high CO2 content might perform best at the lower end of the scale to avoid channeling. When a recipe calls for a "double," it is referencing this specific range of mass, not just the volume of the portafilter.
Optimizing Fresh Bean Dose for Double Espresso Shots
How to Find Your Optimal Dose Rather than chasing a single number, treat the range as a starting point for experimentation. Using 14 grams often results in a lighter, more delicate shot with a quicker pull, ideal for bright, fruity profiles.
Place a scale on the brewing side of the machine and pull straight into the cup or pitcher. Dose (grams) Target Yield (grams) Typical Extraction Time 14 21 – 24 20 – 25 seconds 16 24 – 27 25 – 30 seconds 18 27 – 31 30 – 35 seconds.
Optimizing Fresh Bean Dose for Double Espresso Shots
Roast level and degassing period. The density of the bean, the level of roast, and the age of the coffee all play critical roles.
More About How many grams of beans for double espresso
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