Cold Brew

Simplify Brewer Misc pourover by Bathtub Coffee

Bathtub Coffee's answer to cold brew without the overnight wait: same brewer, same paper, cold water out of the fridge, and a cup three minutes later. What stands in for the missing hours is the grind — extra fine, near espresso — and a ratio of 100g/L that would be undrinkable hot.

1:10 Ratio

3:00 Total

20g Dose

Cold brew Temp

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Parameters

20 g
Coffee: 200 g
Water: 1:10
Ratio: 1 extra fine
Grind: 3:00
Total: ~200 ml
Yield

Grind · 1/10 · extra fine

FINE COARSE

What is 1/10 on your Comandante C40 or 1Zpresso? Gota turns it into clicks

Filter

Kalita Wave 185

Or use April Flat Bottom Paper · Fellow Stagg [XF] · OREA Wave (185) · Origami Wave Paper

Method

3:00 · total

Before you brew

1 Set a paper filter in the basket.
2 Rinse the filter.
3 Add 20g of grounds.

Bloom 1 / 3
0:00

30s

Pour 30g over the centre of the bed. Let it bloom.

+30g→ 30g Center pour 3g/s 10s
Pour 2 / 3
0:30

2m30s

Finish in a spiral to 200g.

+170g→ 200g Spiral 5.7g/s 30s
Done 3 / 3
3:00

Finish when the coffee stops dripping.

Notes

The water is cold, not iced, and it goes in from a gooseneck like any other brew. Nothing is chilled afterwards. Let the first pour sit for the full thirty seconds before starting the second — with cold water the bed wets slowly, and that pause is not decorative. After the last pour it takes 90 to 120 seconds to run through. Lift the brewer off at about three minutes; roughly 160g lands in the cup.