How to Use the Hario Drip Scale for Consistent Brewing

Quick answer

Use the Hario Drip Scale's tare function to zero out your server, then weigh coffee grounds and water while timing your pour-over for repeatable, precise brews.

Step-by-step guide to using the Hario Drip Scale

1. Step 1: Place and zero your vessel: Set your dripper and empty server (or cup) on the scale. Press the tare button to reset the display to 0.00 g. Always tare before adding coffee or water, not after. A common mistake is forgetting to tare after switching vessels.
2. Step 2: Weigh your coffee dose: Add coffee grounds to your filter until you reach your target weight (e.g., 15 g for a single cup). The scale's 1/10th gram precision helps you hit the exact dose. Check that the scale is on a level, stable surface. Uneven placement can cause fluctuating readings.
3. Step 3: Start the timer and bloom: Press the timer button (often the same as the power button) to start timing. Pour just enough water (about twice the coffee weight) to saturate the grounds, then wait 30–45 seconds. Don't reset the timer during the bloom. Keep it running so your total brew time stays accurate.
4. Step 4: Pour water by weight, not volume: Continue pouring water in stages or a steady stream until you reach your target water weight (e.g., 250 g for a 1:16.7 ratio). Watch the display to pause or slow your pour as you approach the target. Pour slowly near the target to avoid overshooting. Even 5 g extra water can change your extraction noticeably.
5. Step 5: Note total brew time: Once all water has passed through the grounds, stop the timer. Record the total time (e.g., 3:00) alongside your dose and water weight for future reference. Consistency comes from repeating the same numbers. Write down your recipe until it becomes automatic.

Product used in this guide

• Hario Drip Scale w/ Timer: Precise to 1/10th of a gram with a built-in timer and large readable digital screen. You can follow and repeat brew recipes accurately without needing a separate stopwatch.