Pour-Over Coffee Ratios

A starting ratio: 1:15 to 1:17

A widely used starting point is somewhere around 1 gram of coffee for every 15 to 17 grams of water, often written as 1:15 to 1:17. A 1:15 ratio gives a stronger, more intense cup, while 1:17 produces a lighter, more delicate one. For a single large mug you might use 20 grams of coffee to about 320 grams of water at a 1:16 ratio. Because water weighs essentially the same as its volume in milliliters, a scale lets you measure both accurately with one tool.

Why a scale matters more for pour-over

A scale is genuinely important for pour-over, more so than for many other methods. Scooping by volume is unreliable because beans vary in size and density, so the same scoop can hold noticeably different amounts of coffee. Weighing your coffee and your water removes that variability and turns each brew into a measurement you can repeat or deliberately change. A scale with a timer is ideal, since timing your pour matters too.

Ratio sets strength, grind controls extraction

Ratio sets strength, but grind size controls extraction, and the two work together. If you keep the ratio the same but grind finer, water moves more slowly and extracts more, which can add sweetness or tip into bitterness if taken too far. Grind coarser and the water flows faster, extracting less and risking a sour, weak cup. When a brew tastes off, decide first whether it is a strength issue, solved by ratio, or an extraction issue, solved by grind.

Pouring technique: bloom, then controlled stages

Pouring technique shapes how evenly the water contacts the grounds. Most pour-over methods begin with a bloom, a small initial pour that wets the grounds and lets trapped gases escape, which helps the rest of the water extract evenly. After the bloom, pour in slow, controlled stages, keeping the coffee bed level and avoiding pouring directly onto the filter walls. A steady, even pour prevents the water from channeling and gives you a cleaner, more balanced result.

Treat the numbers as a starting point

Treat these numbers as a reliable starting point rather than a rigid rule. Brew a cup at 1:16, taste it honestly, and adjust: if it is too strong or too weak, change the ratio, and if it is sour or bitter, change the grind. Keep notes on what you did so you can find your way back to a cup you loved. With a scale, a timer, and a little attention, pour-over becomes one of the most controllable and satisfying ways to make coffee.

Frequently asked questions

What is a good coffee to water ratio for pour-over? Around 1:15 to 1:17 by weight, meaning 1 gram of coffee per 15 to 17 grams of water. 1:15 gives a stronger cup, 1:17 a lighter one.

Why do I need a scale for pour-over coffee? Scooping by volume is unreliable because beans vary in size and density, so the same scoop holds different amounts of coffee. Weighing removes that variability and lets you repeat or adjust a brew deliberately.

My pour-over tastes bitter, should I change the ratio or the grind? Grind. Ratio controls strength; grind size controls extraction. A too-fine grind over-extracts and can taste bitter, so try a coarser grind first.

What is blooming in pour-over coffee? A small initial pour that wets the grounds and lets trapped gases escape before the main pour, helping the rest of the water extract evenly.

Quick answers