Introduction:Mastering the pouring rhythm and timing of three-stage pour over coffee can effectively enhance its complexity and flavor balance. This guide uses 15g of coffee grounds, a 1:15 coffee-to-water ratio, 88°C water temperature, and medium-coarse grind as an example to detail the key points of blooming, the second stage, and the third stage pours, teaching you how to judge the optimal pouring timing and optimize your recipe by tasting the early-, mid-, and late-stage brews to find your unique flavor profile.

The three-stage pour over is a practical extraction technique that divides the pouring process into three parts. By precisely controlling the amount of water and timing for each stage, it influences the final flavor structure of the coffee. Based on standard parameters — 15g of coffee, a 1:15 coffee-to-water ratio, 88°C water temperature, and a medium-coarse grind (approximately 75% extraction through a #20 sieve) — this guide fully explains the brewing process of a well-known Colombian Huila coffee bean brand. It includes specific steps such as a 30-second bloom, followed by a second pour of 100g of water and a third pour of 95g, along with how to determine the ideal timing for subsequent pours. Additionally, it shares a method of tasting the brewed coffee in early-, mid-, and late-stage segments to help enthusiasts discern flavor differences across the stages and then adjust the pouring ratios to brew a cup that matches personal preferences.

What is the three-stage brewing method? Simply put, it breaks the entire pouring process into three parts, with the first stage being the bloom pour. This method is widely used in the pour over community, such as in the brewing styles of certain well-known cafes. Taking Colombian Huila as an example, using 15g of coffee, a 1:15 ratio, 88°C water, and a medium-coarse grind (75% through a standard #20 sieve), the preparation includes warming the filter cone and server, grinding the coffee, having properly heated water ready, then placing the coffee grounds into the filter cone and starting the first pour while beginning the timer. The first pour is 30g of hot water, recommended to be poured in a circular motion from the center outward to allow even absorption and gradual expansion of the coffee grounds, forming a plump "coffee burger" shape.

Once the pour reaches 30g, pause and let it bloom for 30 seconds. When the scale shows 31 seconds have passed, you can begin the second pour. This stage also involves pouring in a circular motion from the center outward, maintaining a steady and vertical water stream. The water stream will impact the coffee bed and create bubbles. The goal of this stage is to allow the bubbles to fully release and evenly cover the surface of the coffee bed. The liquid level should rise to the base of the short ribs of the filter cone, with a total pour of100g. ()

When the liquid level naturally drops to about half, you enter the final stage of pouring. This stage also uses a “fragrance-sniffing” style of pouring from the center outward, adding95gof water. The originally dark brown foam will gradually turn light yellow, and the liquid level will also rise back to near the height of the second pour. After all the brewed coffee has completely dripped into the server, remove the filter cone to complete the full extraction process.

Regarding the timing of subsequent pours, the three-stage method mainly involves two key moments: the second and third pours. The second pour is generally done after 30 seconds of blooming, which is relatively easy to manage, whereas the third pour is trickier because there’s no fixed time. A well-known brand usually recommends waiting until the water level has dropped to about1/2 or 2/3of the filter cone before pouring again. At this point, the cone won’t hold too much excess water, nor will the water level be so low that the coffee bed is exposed, helping to avoid uneven extraction between the upper and lower layers of coffee grounds.

When the water level drops, the stream can directly penetrate the surface accumulation and create agitation in the lower layer. If the water level is too high, the impact of the stream is insufficient, which can lead to over-extraction of the upper coffee grounds and under-extraction of the lower ones, affecting overall flavor balance.

The three-stage extraction method offers several advantages: First, it extracts more flavor compounds from the coffee, enhancing overall complexity; second, it’s highly adaptable and suitable for most coffee beans of different origins and roast levels; third, for brewers, if the initial pour volume is too large and causes the water level to rise too quickly, a segmented strategy can extend the brewing time, letting the water level drop naturally before continuing, thereby avoiding uneven extraction due to overly fast flow. In addition, segmented brewing helps identify the unique flavors of each stage, enabling further refinement of the brewing recipe.

A well-known brand once conducted an experiment using Colombian Rose Valley coffee beans, keeping the daily pour over method largely the same. Brewing parameters were set as follows: 20g of coffee,20g, medium-fine grind (78% through a #20 sieve), water temperature1:15、Medium-fine grind (78% passing through a No. 20 sieve), water temperature91℃. Three identical serving pitchers were prepared to observe color changes in each stage of the brew. According to the experiment, 20g of coffee absorbs approximately40gof water, meaning roughly260gof brewed coffee can be extracted, which was divided equally into 3 portions, each about86.6g.

The experimental steps were as follows: first, pour 40g of water for a 30-second bloom, then reset the scale to zero and pour the first 86.6g portion. After all the brewed coffee has dripped into the server, switch containers and reset the scale; then pour the second 86.6g portion, again waiting for all the coffee to drip out before switching containers and resetting the scale to zero; finally, pour the third 86.6g portion and wait until the coffee has completely flowed out to finish the experiment. The result was three equal portions of brewed coffee, which showed a color gradient from dark to light and a concentration shift from strong to mild, clearly demonstrating differences between the early-, mid-, and late-stage brews.

Tasting results showed: the early-stage brew had concentrated and intense flavors, with noticeable acidity and boldness; the mid-stage exhibited soft fruit acids, honey, and cocoa notes, with an overall more balanced profile; the late-stage tasted almost watery, with only faint sweetness and subtle floral hints. It became clear that although the early stage extracted a lot of flavor, the concentration was high, making details harder to discern and leaning towards sourness; the mid-stage offered complex flavors with balanced acidity, sweetness, and bitterness, dominated by sweetness; the late-stage was nearly bland, with only slight residual aroma.

Besides tasting each stage separately, you can also try blending the early- and mid-stage, early- and late-stage, or all three in fixed ratios to discover your preferred flavor combination and further adjust your pouring ratios. For example, a well-known brand mixed the three stages in1:1:1proportion to showcase the full flavor profile of the Rose Valley. The difference between this experiment and everyday brewing is that each stage’s pour required waiting for the coffee to fully drip before continuing, resulting in a longer overall brewing time. However, this approach allows for clear identification of flavor changes after each pour, helping to optimize pour distribution and identify potential off-flavors in the coffee. If you notice unusual flavors in your daily brews, try segmented extraction to analyze the issue step by step and adjust your brewing strategy accordingly.

The above content is compiled by CoffeeHunters, a coffee news website.