Concentrate Brew

Chemex 8 Cup Chemex by Chemex

Chemex is credited with this concentrated preparation for the Chemex 8-cup, intended as a flexible base rather than a finished standard-strength brew. Its dense, clean profile can be opened with hot water, milk, or ice at serving.

1:10 Ratio

3:30 Total

50g Dose

95°C Temp

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Parameters

50 g
Coffee: 500 g
Water: 1:10
Ratio: 95 °C
Temp: 6 medium-coarse
Grind: 3:30
Total: ~500 ml
Yield

Grind · 6/10 · medium

FINE COARSE

Method

3:30 · total

Bloom 1 / 6
0:00

25s

Pour 100g in a spiral.

+100g→ 100g Spiral 5.9g/s 17s 95°C
Swirl 2 / 6
0:25

20s

Swirl gently. Let it bloom.

5s
Pour 3 / 6
0:45

45s

Pour in a spiral to 300g.

+200g→ 300g Spiral 6.1g/s 33s
Pour 4 / 6
1:30

40s

Finish in a spiral to 500g.

+200g→ 500g Spiral 6.1g/s 33s
Swirl 5 / 6
2:10

1m20s

Swirl gently.
Done 6 / 6
3:30

Concentrate ready. Dilute to taste, or serve over ice.

Notes

Use 50g and 500g as the fixed brewing base, then dilute only after tasting the concentrate. Grind somewhat finer than for a full batch, but coarsen if flow nearly stops; heavy agitation can make the concentrated cup woody.

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Chemex

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