Pour-Over Coffee Tips and SCAA Brewing Ratios

Struggling to get your pour-over coffee to taste balanced—clean, sweet, and not overly bitter or sour? Even with great beans, poor technique or the wrong coffee-to-water ratio can ruin your cup. Many home brewers follow vague online advice without understanding how grind size, water temperature, and pour timing affect extraction. Understanding the science behind the numbers helps you make adjustments that matter.

The Specialty Coffee Association of America (SCAA) recommends a standard brew ratio of 1:15 to 1:18—that’s 1 gram of coffee for every 15–18 grams (millilitres) of water. For a standard 300ml cup, that means using 16 to 20 grams of coffee. This range provides the flexibility to highlight different flavor notes while ensuring proper extraction.

What Is Pour-Over Coffee?

Pour-over is a manual coffee brewing method where hot water is poured in a controlled manner over ground coffee in a filter. Popular devices include the Hario V60, Kalita Wave, and Chemex. Unlike espresso or French press, pour-over highlights clarity, acidity, and aroma through precise water contact time and agitation control. It’s favored for revealing subtle tasting notes in single-origin beans.

Why SCAA Ratios Matter

The SCAA (now the Specialty Coffee Association) developed its brewing guidelines based on extensive sensory and extraction research. The recommended 1:15 to 1:18 brew ratio ensures enough solubles are dissolved for a balanced cup without over- or under-extracting. Outside this range, extraction suffers: too little water leads to harsh, bitter flavors; too much water results in weak, sour cups. These ratios apply regardless of brew device, as long as you maintain proper grind size, water temperature, and pouring technique.

How to Dial In Your Pour-Over

To start, use the SCAA’s guideline: 1 gram of coffee per 15–18 grams of water. That translates to about 16–20g coffee for 250–300ml water. Grind size should be medium-fine, similar to table salt—adjust finer for brighter flavors or coarser for smoother cups. Water temperature should stay between 90–96°C (195–205°F). The typical pour method includes:

• A pre-wet (bloom) phase: pour ~2x your coffee weight in water (e.g., 40g for 20g coffee) and wait 30–45 seconds.
• Main pour: add the remaining water in controlled circles, usually in multiple stages (e.g., two or three pours), taking 2:30–3:30 total brew time.

Consistency in timing, agitation, and water distribution matters more than any single variable. Use a digital scale and timer to track your variables.

Adjusting for Flavor

If your coffee tastes sour or weak, try grinding finer or increasing brew time slightly. If it’s bitter or dry, grind coarser or reduce contact time. Slight adjustments in water temperature (warmer for brighter extractions, cooler for softer cups) also shift the balance. Keep notes on coffee dose, grind setting, water volume, temperature, and timing to refine your personal recipe.

Frequently Asked Questions

What is the ideal SCAA coffee-to-water ratio for pour-over?

The SCAA recommends a brew ratio between 1:15 and 1:18. That means 1 gram of coffee per 15 to 18 grams (or millilitres) of water. For example, 20 grams of coffee would use 300–360 ml of water, though 300 ml is most common for a single cup.

What grind size should I use for pour-over coffee?

Use a medium-fine grind, similar in texture to table salt. This works well for most pour-over devices like the V60 or Kalita Wave. Adjust finer for a slower drawdown and brighter flavors, or coarser for faster flow and mellower cups.

What water temperature is best for pour-over brewing?

Ideal water temperature is between 90–96°C (195–205°F). Staying in this range ensures proper extraction of acids, sugars, and bitter compounds without over- or under-extracting the coffee.

How long should a pour-over brew take?

Total brew time—including bloom—should be around 2:30 to 3:30 minutes. If it’s too fast, your grind may be too coarse; if it’s too slow, your grind might be too fine or your pour too slow.

Why is blooming important in pour-over coffee?

Blooming (pre-wetting the grounds) releases trapped CO₂ and prepares the coffee bed for even extraction. Use about 2x your coffee weight in water (e.g., 40g water for 20g coffee) and let it sit for 30–45 seconds before continuing the pour.

Can I use any coffee with the SCAA pour-over ratio?

Yes. The 1:15–1:18 ratio is flexible and works with any single-origin or blend. Adjust grind size, water temperature, or brew time to highlight different flavor characteristics based on the bean’s origin and processing method.

Recommended FrontStreet Beans for Pour-Over

FrontStreet Coffee offers several single-origin arabica beans ideal for pour-over. The Brazil Yirgacheffe is a medium-roast with a smooth, nutty profile and mild acidity, perfect for showcasing clarity. The Colombia Sidra features a juicy, fruity complexity with high sweetness and almond notes, thriving with a medium-fine grind. For classic Indonesian body, try the Sumatra Lintong Mandheling, medium-dark roasted with toast, herbs, and dark caramel notes. All three beans respond well to the SCAA-recommended 1:15–1:18 brew ratio and medium-fine pour-over grind. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.