Pulse Drawdown

Hario Switch 02 Hario switch by brewnotes.co

Published by Brewnotes, this Switch method pairs a closed immersion bloom with an open, pulsed drawdown. Sustained bed movement and percolation favor a bright, articulate cup with more clarity than full immersion.

1:15 Ratio

2:20 Total

15g Dose

93°C Temp

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Parameters

15 g
Coffee: 225 g
Water: 1:15
Ratio: 93 °C
Temp: 5 medium
Grind: 2:20
Total: ~230 ml
Yield

Grind · 5/10 · medium

FINE COARSE

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Method

2:20 · total

Bloom 1 / 5
0:00

45s

Close the switch. Pour 50g. Let it steep.

+50g→ 50g 5g/s 10s Valve: Closed 93°C
Pour 2 / 5
0:45

20s

Open the switch. Pour over the centre of the bed to 120g.

+70g→ 120g Center pour 5g/s 14s Valve: Open
Pour 3 / 5
1:05

15s

Pour over the centre of the bed to 170g.

+50g→ 170g Center pour 5g/s 10s Valve: Open
Pour 4 / 5
1:20

1m

Finish over the centre of the bed to 225g.

+55g→ 225g Center pour 5g/s 11s Valve: Open
Done 5 / 5
2:20

Drawdown complete.

Notes

Keep the slurry just above the filter between pulses rather than allowing a full drain. Pour steadily near the center; wide or forceful circles can open channels in the already saturated bed. Coarsen slightly if later pulses stall.

Original source

Recipe by brewnotes.co, published at instagram.com.