Step Three: Grind Coffee
We cannot stress enough the importance of a good quality burr grinder. If you’re considering brewing with a V60, but don’t have a burr grinder, stop what you’re doing right now and order one. A quality burr grinder is going to produce a consistent grind size. Why is this important? Blade grinders produce coarse and fine particles. The fine particles over-extract and make your coffee taste bitter. The course particles under-extract and taste sour. Dialing in the perfect grind with a burr grinder ensures your coffee is properly extracted and tastes fabulous every time.
Set your grinder to a medium/fine setting, about as fine as kosher salt.
Step Four: Rinse Filter / Pre-Heat Vessel
Open and place your Hario V60 filter in the brewer. Rinse the filter to remove any residual paper taste. This also serves to pre-heat the vessel. Before adding the coffee, remove the excess water from the carafe or mug.
Step Five: Add Coffee
Dump your freshly ground coffee into the V60 and give it a quick shake to level out the grounds, place your brewer on the scale and tare out to 0.
Step Six: Start Timer / Begin Pour
Start your timer and begin preinfusion. Slowly pour the water from your kettle in a circular motion. Saturate the grounds with water right off the boil. Use just enough water to cover the grounds. Let it bloom for 30 seconds. This allows the coffee to de-gas or "bloom".
Once you have reached 30 seconds, slowly and steadily begin pouring your water again in circular motions until the coffee bed is raised a little over halfway up the side of the filter.
Pause and let the bed sink down for about 5 seconds, and then steadily pour more water in a circular motion until it rises back to the halfway point. Do this a few times until your scale reaches 300 grams of water. With each pour fully submerge the crust of the coffee bed and try to keep your stream steady.
Once you reach 300 grams, let your coffee finish draining. Your total brew time should be around 2:15 to 2:30. If your coffee did not stop draining until after 2:30, you will need to adjust your grind to a coarse setting.
If your coffee stopped draining before 2:15 you will need to adjust your grinds to a finer setting. Note: If you are brewing a double batch with 40 grams of coffee and 600 grams of water your total brewing time should be between 3:15 to 3:30.