Tetsu Kasuya 4:6 Method Explained

I’ve probably brewed over a thousand times with Hario V60 brewing device. Recently I began exploring the Tetsu Kasuya 4:6 technique, and you know what? It has become my favorite Hario V60 brewing technique!

In this video, I will go over how you use the technique, the extraction science behind it, the versatility the brewing steps provide and why I will be using it as my daily Hario V60 brewing technique moving forwards.

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0:00 Intro
0:38 Brewing Steps
3:16 Pros of Technique
9:20 Cons of Technique
10:20 Outro

- Mastering Everyday Coffee

[re-psyl]

I am an amateur and just recently knew Tetsu Kasuya’s technique. This video makes it very easy to understand it. Thanks to you, I have been able to “hit the spot” when I brew.

[garygardens]

Boy, you really nailed the TK 4:6 method with this video. Excellent description and tutorial. I like that you first did a quick brew and then went into the detail of "how" and, more importantly, "why". Best I've seen so far on the method and gives a clear understanding of how it works. One thing you didn't touch on was water temperature. Do you have recommendations for that? Thanks!

[arturocarcuro]

Best explanation and breakdown of the 4:6 technique I've seen. Thanks!

[brandonyates]

Man, this is the clearest video I’ve seen on the TK 4:6! I’ve been brewing with it for a few months and learned a lot from watching. Amazing content. Thank you!

[chuckf]

I just tried this method this morning. Did a rough approximate of grams to tablespoons and ml to ounces. Sweetest cup of coffee I've ever made. Thank you for your clarity on this technique. I believe switching to a coarse grind was the game changer as well as multiple smaller pours over the grounds. I did a 12 ounce cup to near perfection with a Melitta filter and pour over!

[jeven]

Great explanation of Kasuya-san’s 4:6 method. Thanks for sharing

[richieesco]

Thank you for this video. You really helped me understand the process better. Your other videos as well are helping an amateur coffee maker like me out a lot.

[strtrpn]

Very satisfying video not to mention how lit the content is. Very well done.

[MKultra]

Lovoe the chart in the beginning. Thank you so much!

[GeorgeGoosen]

Are there any considerations that need to be made for time? How long between pours and how long should it take to finish

[yuwing]

Awesome video. As an amateur homebrewer, I really enjoy the 4:6 method over others (eg James Hoffmann's). I feel I can really dial in what I want in a cup - acidity/sweetness/bitterness.

For those who use timemore c2, I use 26 clicks on medium roast beans, 15g, 1:15 ratio, 3x pours in the 60%. Ymmv depending on beans.

[rileymcrae]

My new favorite coffee youtuber by far, you make excellent content i hope you grow more ❤️

[timbell]

Great video and solid explanation. I like how you simplify the theory to the concept of extraction. When you say milligram, I believe you mean gram or millilitre. A milligram is one thousandth of a gram.

[CNich]

Awesome video. Loved your graphics, well put together and informative. Subbed.

[bartoszkleszcz]

Thanks! I've recently returned to the 4:6 method so your video appears just at the right time for me. It's very useful how you've tried various grinds and brew ratios. This turns an algorithm into a flexible brewing method with adjustable variables. So, as I understand, I should focus on giving the coffee time to stop pouring down instead of waiting for the 45s intervals? Do you not use the timer at all in this technique? Tetsu recommends ending the brewing at 3:30 with 45s intervals, hence the question.

[FER_R]

Great video! I have been watching 4:6 Tetsu Katsuya videos ever since I came across it to understand it better. Yours is by far the best I have watched and your chart is a great reference. It is mind-blowing how you do not have more views or likes. Goes to show the algorithm does not work very well sometimes.

[hobby_coffee]

This is great, thank you for the thorough explanation about the 4:6 method and also for the water to coffee ratio chart, I find it very useful as the starting point to brew different amount of coffee 👍🏻

[oriongameplays]

Keep up the good work, man! You have a great channel! Dont loose sight of it, just keep grinding like you do your coffee!

[RichardTongeman]

This really helped. I was struggling to understand why brewing 500ml tasted better than 250ml. It was that the grind size & ratio needed to be adjusted to match.

[WidiantoZhu]

He explains the method better than the author himself. Thanks mate!