In the world of specialty coffee, few techniques have gained as much legendary status as the 4:6 Method: Hario V60 Recipe Guide. Developed by Tetsu Kasuya, the first Asian world champion of the World Brewers Cup in 2016, this method fundamentally changed how baristas and home enthusiasts view extraction. Unlike traditional recipes that focus on a steady, continuous pour, the 4:6 Method relies on a series of distinct pulses that allow the brewer to “tune” the coffee’s flavor like an instrument.
The beauty of the 4:6 Method: Hario V60 Recipe Guide lies in its mathematical simplicity and its incredible versatility. By dividing the total brew water into two specific stages—40% for flavor balance and 60% for strength—the recipe removes much of the guesswork associated with pour-over coffee. It intentionally utilizes a coarser grind than most V60 recipes, which helps prevent over-extraction and bitterness, resulting in a cup that is remarkably clean, sweet, and vibrant.
In this comprehensive guide, we will walk you through the science, the gear, and the step-by-step execution of Kasuya’s award-winning technique. Whether you are a beginner looking for your first reliable recipe or a seasoned pro seeking more control over your brew, understanding the 4:6 Method is a vital step in your coffee journey. You will learn how to adjust acidity, sweetness, and body simply by changing the volume of your pours, giving you the power to brew the perfect cup every single time.
The Philosophy and Logic Behind the Tetsu Kasuya Method
Before Tetsu Kasuya took the stage at the 2016 World Brewers Cup, specialty coffee brewing often felt like an inaccessible art form reserved for those with elite technical skills. Kasuya changed the landscape forever by winning the championship with a methodology built on a singular, democratizing philosophy: “anyone can brew delicious coffee.” His victory marked a turning point for home baristas, shifting the focus from complex pouring techniques to a logical, modular system that prioritizes reproducibility over manual dexterity.
The core logic of the 4:6 Method lies in its mathematical division of the brewing process. Unlike traditional continuous pour techniques that rely on a steady hand to maintain temperature and extraction, Kasuya’s approach breaks the total water volume into two distinct stages. The first 40% of the water is used to adjust the flavor profile. By varying the ratio between the first and second pours within this stage, the brewer can precisely control the balance between bright acidity and lingering sweetness.
The remaining 60% of the water serves a different purpose entirely: managing the strength of the brew, often measured as Total Dissolved Solids (TDS). By dividing this final volume into more or fewer pours, you can increase or decrease the coffee’s body and concentration without altering the flavor balance established in the first stage. This unique separation of “flavor” and “strength” provides a level of control that continuous pouring simply cannot match, making it a revolutionary tool for those seeking consistency in every cup.
Essential Gear and Parameters for the Perfect Brew
To execute the 4:6 Method with precision, you must first gather the specific tools that allow for total control over the brewing variables. At the heart of this setup is the Hario V60 dripper; while the 01 size works for smaller doses, the 02 size is highly recommended to accommodate the multiple high-volume pours characteristic of this technique. Pair this with high-quality oxygen-bleached paper filters to ensure a clean cup without any papery aftertaste.
Precision is non-negotiable for Tetsu Kasuya’s logic. You will need a digital scale with a built-in timer to track the exact weight of each pour and the intervals between them. A gooseneck kettle is essential for directing the water flow accurately and preventing agitation. Finally, a high-quality burr grinder is required to achieve a consistent coarse grind—similar in texture to sea salt or French press grounds. This coarse setting is vital because it allows water to pass through the large bed of coffee quickly enough to prevent over-extraction during the five separate pours.
The standard parameters for the 4:6 Method utilize a 1:15 coffee-to-water ratio. For a balanced, single-serving brew, use 20g of coffee to 300ml of water. Regarding temperature, while many V60 recipes call for boiling water, this method typically prefers a slightly lower range of 90-92°C (194-198°F) for light roasts. This lower temperature, combined with the coarse grind, ensures that you extract the pleasant sweetness and acidity highlighted in the first 40% of the brew without pulling in the bitter compounds that can emerge at higher heats.
Mastering the First Phase Adjusting Acidity and Sweetness
The first phase of the 4:6 method is where the “magic” of flavor balance happens. This initial 40 percent of your total water volume is responsible for defining the relationship between acidity and sweetness. If you are following the standard 300ml recipe, this phase consists of 120ml of water, which Tetsu Kasuya instructs us to break down into two distinct pours.
Execution starts with the first pour, which acts as a bloom but with a much larger volume than traditional recipes. By default, these two pours are 60ml each. However, the 4:6 method is designed for customization: the relative size of these two pours dictates the final profile. To highlight a bright, vibrant acidity, use a larger first pour and a smaller second pour (e.g., 70ml then 50ml). Conversely, to enhance sweetness and a more rounded finish, use a smaller first pour followed by a larger second pour (e.g., 50ml then 70ml).
When executing these pours, use a steady, circular motion from the center outward. The key is to wait for the water to drain through the coffee bed almost entirely before starting the next pour—usually around the 45-second mark. This high-efficiency drainage is possible because of the coarse grind size. By manipulating these first two pours, you effectively “dial in” the character of the bean before moving on to the strength phase.
The Final Sixty Percent Controlling Strength and Body
Once you have established the balance of acidity and sweetness in the first 40 percent of the brew, the remaining 60 percent of the water volume is dedicated entirely to dialing in the strength and body of your coffee. While the initial pours focus on flavor profile, this second phase acts as the engine for concentration. In a standard 300ml recipe, this involves the final 180ml of water, which is traditionally divided into three equal pours of 60ml each.
The relationship between the number of pours and the resulting mouthfeel is a core pillar of Tetsu Kasuya’s philosophy. By dividing the water into more frequent, smaller pours, you increase the frequency of turbulence and the contact time between the water and the grounds. This leads to higher extraction, creating a coffee with a heavy body and intense strength. Conversely, if you prefer a lighter, tea-like consistency with more clarity, you can combine these volumes into two larger pours or even a single continuous pour to finish the brew.
Precision in timing is vital during this phase to maintain the “clean” characteristic the 4:6 method is known for. You should wait for the water to drain almost completely through the filter before starting the next pour. Typically, this occurs every 45 seconds, allowing the bed of grounds to settle briefly. Because the 4:6 method utilizes a coarser grind than standard V60 recipes, this rhythmic pulsing prevents the filter from clogging, ensuring a steady drawdown and a consistently powerful final cup.
Step by Step Instructions for the 4:6 Method Hario V60 Recipe Guide
To begin the 4:6 Method, place your filter in the Hario V60 and rinse it thoroughly with hot water. This eliminates paper taste and pre-heats your vessel. Using a coarse grind—similar to sea salt—is essential. This texture ensures that water flows freely through the bed, preventing the “clogging” that often occurs with standard finer grinds during multiple pours.
Following a standard 20g of coffee to 300g of water ratio, follow this precise timeline:
- 0:00 (1st Pour): Gently pour 60g of water to bloom the grounds. This initial phase sets the acidity level.
- 0:45 (2nd Pour): Add another 60g (reaching 120g total). This completes the first 40% of the brew, balancing sweetness against the initial acidity.
- 1:30 (3rd Pour): Pour 60g (reaching 180g total). This begins the strength-building phase.
- 2:15 (4th Pour): Pour 60g (reaching 240g total) to increase body and mouthfeel.
- 3:00 (Final Pour): Pour the remaining 60g to reach your 300g target.
The “draw down”—the moment the water finishes passing through the grounds—is the heartbeat of this recipe. You should wait for the water to drain almost completely between each interval. The coarse grind facilitates this rapid drainage, allowing for high extraction without over-extraction. Aim for a total target drain time of 3:30 to 4:00 minutes. If the water drains too slowly, coarsen your grind; if it drains too quickly, refine it slightly for the next brew.
Troubleshooting and Refining Your V60 Technique
Refining your V60 technique requires a keen palate and a willingness to adjust variables based on the logic of the 4:6 method. If your coffee tastes unpleasantly bitter or harsh, it is often a sign of over-extraction. To fix this, try coarsening your grind or lowering your water temperature by 2–3 degrees Celsius. Conversely, if the cup is sour or lacks body, you are likely under-extracting; a slightly finer grind will help slow the draw-down and pull more character from the grounds.
The beauty of this method lies in its modularity. You can fix specific flavor defects by manipulating the first phase (the initial 40% of water). If the brew lacks sweetness, decrease the volume of your first pour and increase the second pour by the same amount. For example, instead of two equal 60g pours, try a 50g first pour followed by a 70g second pour. If the coffee feels too bright or acidic, reversing this—pouring more in the first stage and less in the second—will help balance those sharp notes.
For the best results, choose light to medium roast beans. These roasts possess a high extraction potential and complex acidity that the 4:6 method is specifically designed to highlight. Because this technique uses a coarser grind than traditional V60 recipes, it excels at showcasing the floral and fruity nuances of specialty single-origin coffees without the risk of clogging the filter or producing a muddy cup.
Summarizing the 4:6 Method: Hario V60 Recipe Guide
The 4:6 Method: Hario V60 Recipe Guide offers a revolutionary approach to manual brewing by deconstructing the extraction process into manageable, logical phases. By understanding that the first 40% of your water dictates the flavor profile and the final 60% dictates the intensity, you gain total control over your morning cup. Whether you prefer a bright, acidic Kenyan coffee or a sweet, full-bodied Brazilian roast, this method provides the framework to highlight the best characteristics of any bean. To master this technique, focus on maintaining a consistent coarse grind and practicing your pour timing. With patience and high-quality beans, the 4:6 Method will transform your Hario V60 from a simple tool into a precision instrument for coffee excellence.
