Switch 03 Dark Roast

Hario Switch 03 Hario switch by Hario

Hario's dark-roast method uses the larger Switch 03 for a full immersion sized to share. Gentler heat and controlled contact favor roast sweetness and weight while limiting the bitterness and dryness dark coffee can release.

1:15 Ratio

3:50 Total

30g Dose

88°C Temp

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Parameters

30 g
Coffee: 450 g
Water: 1:15
Ratio: 88 °C
Temp: 7 medium-coarse
Grind: 3:50
Total: ~450 ml
Yield

Grind · 7/10 · medium-coarse

FINE COARSE

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Method

3:50 · total

Pour 1 / 6
0:00

30s

Close the switch. Pour 450g gently.

+450g→ 450g Fill gently Valve: Closed 88°C
Swirl 2 / 6
0:30

10s

Stir 2 times.

Valve: Closed
Steep 3 / 6
0:40

1m30s

Let it steep.

1m 30s Valve: Closed
Prepare 4 / 6
2:10

5s

Open the switch.

Valve: Open
Wait 5 / 6
2:15

1m35s

Wait until it stops dripping.

1m 30s Valve: Open
Done 6 / 6
3:50

Finish when the coffee stops dripping.

Notes

Keep the valve fully closed through the steep and use water cooler than you would for a light roast. Choose a medium-coarse grind, release gently, and shorten contact before lowering heat further if the aftertaste is ashy.

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