Nel drip (flannel filter)

Hand-pouring through a cotton flannel sock, the signature slow method of Japanese kissaten. Cloth lets oils through while holding fines, giving a syrupy, full-bodied cup.

Percolation

Ratio
1:8.3to 1:12.5
Temperature
80–90°C
Time
3–5 min
Grind
Medium coarse

How it works

Cut away, step by step
Water 80–90 °Ccooler than mostCoffee seeps throughthe whole cloth
3:00

Then a very thin, slow stream; the coffee seeps through the cloth

Parameters

Working ranges
Ratio, coffee to water
1:8.3 to 1:12.580–120 g per litre
Dose
20–40 g
Water
200–400 ml
Water temperature
80–90 °C176–194 °F
Contact time
3–5 min
Grind
Medium coarse
Pressure
Atmospheric
Filter
Cotton flannel (nel) sock on a wire ring

Ranges are this atlas's summary of common practice, not a standard. Published standards are listed separately below, with their sources.

Where it sits among 29 methods

Temperature 0°100°
Time 10 s25 h
Strength 0 g/L650 g/L

Pale bars are the other methods; strength is grams of coffee per litre of water.

Published standards

Numbers as facts, with their source

No competition or certification body publishes figures for this method.

Origins and brewers

Origins of the method

Year
not published
Where
Japan

Japanese kissaten tradition, descended from cloth filters used in Europe before paper; not confirmed by a primary source

Brewers

Pour over manual