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Hario Switch 02

Bypass Concentrate

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Hario Switch 02 Hario switch by Torch Brewers Cup

A "brew a clean concentrate, then dilute" routine from a Torch Brewers Cup champion. A thick low-temperature immersion on the Hario Switch over Kruve-sieved coffee, released after a crust-break and heavy agitation, then cut with a large bypass.

1:8.4 Ratio
2:10 Total
25g Dose
81°C Temp
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Parameters

25 g
Coffee
210 g
Water
1:8.4
Ratio
81 °C
Temp
7 coarse
Grind
2:10
Total
~210 ml
Yield
Grind · 7/10 · medium-coarse
FINE COARSE

Filter

Cafec Abaca T-90

Cafec's fast-draining T-90 abaca clears the bed the instant the switch opens, so the immersion releases clean without clogging.

Or use Able Kone Mini (V60) · Barista Warrior Reusable Metal (cone) · Cafec Abaca T-83 · Cafec Abaca T-92

Method

2:10 · total
  1. Pour 1 / 5
    0:00

    Switch CLOSED. Pour 120g at 81°C all at once and let it immerse.

    +120g→ 120g Spiral 15s Valve: Closed
  2. Stir 2 / 5
    1:00

    Break the crust and agitate ten times.

    10s Valve: Closed
  3. Wait 3 / 5
    1:30

    Press the switch to release; let the bed drain completely.

    30s Valve: Open
  4. Bypass 4 / 5
    2:00

    Add 90g of water straight into the drawn extract to 210g total.

    +90g→ 210g
  5. Done 5 / 5
    2:10

    Stir gently and serve.

Notes

Documented by Daisuke Fujisaki (Glitch Coffee) in his champion-recipe series; the individual champion is not named in the source. Grind coarse (Comandante ~26 clicks) and sieve with a Kruve to strip fines and chaff — this prevents powdery and papery off-flavours. Rinse a fast-draining Cafec Abaca filter so the bed doesn't clog on release. Pour all the water at once and immerse; the low temperature keeps extraction efficiency down and prevents over-extraction during the long steep. At 1:00 break the crust and agitate ten times to raise extraction efficiency quickly — safe here because the fines are already removed. Release the switch at 1:30; drawdown finishes near 2:00. Then add the bypass to the drawn extract to keep only the good early-extraction compounds and dial in strength.

Original source

Recipe by Torch Brewers Cup, published at note.com.

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Cold

Iced

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2:00 Total

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Pour

0:00

120g

15s
Pour · 1/5 0:00