4:6 Method

By Tetsu Kasuya at Philocoffea, 2022

A structured five-pour method designed so anyone can control sweetness, acidity, and strength by adjusting pour sizes rather than relying on technique.

Read the original→

Coffee
20g, said in the original. Show the evidence.

“if you're using 20 g of ground coffee beans, you will pour 60 g + 60 g + 60 g + 60 g + 60 g of hot water for a total of 300 g”

said in the original · Breaking Down the 4:6 Method section

Water
300g, said in the original. Show the evidence.

“if you're using 20 g of ground coffee beans, you will pour 60 g + 60 g + 60 g + 60 g + 60 g of hot water for a total of 300 g”

said in the original · Breaking Down the 4:6 Method section

Ratio
1:15
Temperature
93°C, said in the original. Show the evidence.

“Around 93°C for light roast coffee”

said in the original · The Water section; 93°C taken as the primary figure, being the temperature for light roast which the method's coarse grind and clarity focus most naturally suits

Brew time
3:30, said in the original. Show the evidence.

“3:30 Remove the coffee dripper”

said in the original · Timing Each Pour section

Grind (estimated)
medium-coarse, worked out from the recipe. Show the evidence.

medium-coarse to coarse grind

worked out from the recipe · range spans medium-coarse to coarse; medium-coarse taken as the finer end of the stated range and the more precise placement

Grind: medium-coarse to coarse

Tap any underlined number to read where it came from. Numbers marked estimated are ones the original recipe does not give.

Equipment

Designed on
Hario V60 Dripper Kasuya Model, said in the original. Show the evidence.

“Hario V60 Dripper Kasuya Model + 100 Filters”

said in the original · recommendations section, first item

Works with
conical paper dripper, worked out from the recipe. Show the evidence.

Hario V60 Dripper Kasuya Model

worked out from the recipe · method uses a conical paper dripper; any conical paper dripper shares the same geometry

grams

Uses 300g of water

600:001200:451801:302402:153002:45
Water in the brewer over time, drawn from the recipe.

Step by step

0:00
  1. 0:00Pour to 60gfirst of two pours in the 40% sweetness/acidity stage; pour less than the second pour for sweeter, more than the second for brighteryou have 45s
  2. 0:45Pour to 120gadd 60gsecond of two pours in the 40% stage; wait until water has almost completely passed through before pouringyou have 45s
  3. 1:30Pour to 180gadd 60gfirst of three pours in the 60% concentration stageyou have 45s
  4. 2:15Pour to 240gadd 60gsecond of three pours in the 60% stageyou have 30s
  5. 2:45Pour to 300gadd 60gthird of three pours in the 60% stage; more pours in this stage increase strengthyou have 45s
  6. 3:30Let it drainremove the dripper

Weights are cumulative: what the scale reads when that pour finishes.

How Tetsu Kasuya brews it

Kettle
narrow mouth, said in the original. Show the evidence.

“It's best to use a kettle with a narrow mouth.”

said in the original · The Water section

Water
purified, soft water, 30–50 mg/L hardness, said in the original. Show the evidence.

“Use purified, soft water (30–50 mg/L hardness is recommended).”

said in the original · The Water section

How Tetsu Kasuya says to adjust it

concentration
Adjust how many pours the remaining 60% is divided into.
medium
Divide into two pours
lighter
Pour all 60% at once (one pour)
stronger
Divide into three pours
dark roast note
For dark roast beans, start with two pours to make the coffee thinner
grind adjustment
Adjust grind coarseness to match the timing of each pour passing through the filter.
lighter brew
Coarser grind
thicker brew
Finer grind
sweetness acidity
Adjust the split of the first 40% (two pours) to control sweetness vs acidity.
sweeter
First pour less than second pour
brighter
First pour more than second pour

What it makes

Style
clarity, said in the original. Show the evidence.

“The 4:6 extraction method uses medium ground powder to clarify the coffee's natural flavor by making it transparent.”

said in the original · Hario V60 Dripper Kasuya Model product recommendation section

Suits
light, medium, dark roasts, said in the original. Show the evidence.

“Philocoffea believes that this method is ideal for all types of beans.”

said in the original · Discover Your Own Perfect Cup section

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Credit and corrections

This recipe is Tetsu Kasuya’s. We have written out the numbers and linked to the original.

Also published at youtube.com

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