The Definitive Guide: Pour-Over Coffee

Do your pour-overs consistently taste sour, bitter, metallic, or astringent? Are they lacking that satisfying mouthfeel, sweetness, and smooth finish you enjoy from your favourite cafe?

In this blog, I’m going to share a simple framework for how to approach the variables of pour-over coffee. This "unlock" shifted my entire perception of home brewing, and it all comes down to understanding how your beans dictate your technique.

Why is Pour-Over So Hard?

Next to espresso, pour-over is arguably the best way to highlight a coffee's unique terroir; so why do so many people struggle with it? It’s likely because pour-overs have several unforgiving variables: manual dosing, grind size, water ratio, pour technique, draw-down time, and temperature control.

The great news? You only need to get a few of these right; the rest can be "eyeballed" once you understand the physics. We are going to focus on grind, ratio, and draw-down time, assuming your water quality and pouring technique are already decent.

The Science: Density and Roast

1. Coffee Density

Each coffee has a unique cell structure density. The denser the structure, the harder it is to extract flavor. Density is largely determined by maturation time: regions with higher elevations and cooler climates produce slower-growing, denser cherries.

2. Roast Degree and Time

The darker and longer a coffee is roasted, the more brittle, porous, and soluble its cell walls become. This makes it much easier to extract flavour. This is why espresso roasts are generally developed longer: the pressurized, short extraction window needs brittle particles to quickly release sugars and oils.

The Framework: Adjusting Your Variables

When you understand these variables, the "math" of brewing becomes a sliding scale rather than a mystery:

Balancing the Pour

General Rule: The lighter and denser the coffee, the more "work" is required. This means more contact time with water and a higher number of pours to properly extract the solubles.

For example, a Nordic style, dense African coffee will require more frequent pours and a 5 minute draw down time to taste great. Conversely, a darker-roasted, less dense Central American coffee may require just 3 pours and a draw-down time of as little as 3 minutes.

The Recipes: Variable-Based Brewing

1. Ultra-Light Roast (High-Extraction Variables)

Best for: Nordic roasts, high-altitude Africans (i.e. Ethiopians or Kenyans.)

• Dose: 22g | Ratio: 1:16 | Grind: Medium-Fine
• Bloom: 60g water – Gently stir the bed with a spoon.
• Pours 2 – 6: Add 60g water every 30 seconds.
• Total: ~360ml water | Time: 5–6 minutes.

2. Light to Medium Roast (Standard Variables)

Best for: Standard specialty roasts, washed Colombians or Central Americans.

• Dose: 20g | Ratio: 1:15 | Grind: Medium
• Bloom: 60g water – Wait 30 seconds.
• Pours 2 – 5: Add 60g water every 20-30 seconds.
• Total: 300ml water | Time: 4–5 minutes.

3. Dark Roast (Low-Extraction Variables)

Best for: French or Italian roasts, low-altitude Brazils.

• Dose: 22g | Ratio: 1:14 | Grind: Medium-Coarse
• Bloom: 77g water – Wait 20 seconds.
• Pours 2 – 4: Add 77g water every 20 seconds.
• Total: ~308ml water | Time: 3–4 minutes.

By manipulating these variables based on the bean's density and roast, you take the guesswork out of brewing. Next time you pull out your dripper, don't just follow a recipe, adjust your variables accordingly. 

If you are looking for a great example of how to split pours checkout the Tetsu 4:6 Method.