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Pour-over ratio is a way to choose the intensity of a drink. It compares the mass of dry coffee with the water used to brew it. A ratio of one to sixteen means sixteen grams of water for each gram of coffee. That relationship is easy to calculate, but choosing the right one requires tasting: the same number can feel delicate with one coffee and heavy with another.

Begin with a familiar serving

Suppose you use 20 grams of coffee. At one to fifteen, you would pour 300 grams of water; at one to seventeen, you would pour 340 grams. The larger water amount generally gives a less concentrated drink, though it also changes extraction during brewing.

The liquid collected in the cup will weigh less than the poured water because the grounds hold some back. Use input water when describing the brew ratio, and keep that convention consistent.

Choose a middle starting point, such as 20 grams to 320 grams, then assess whether the resulting cup has the weight you enjoy. There is no need to begin with tiny numerical differences that you cannot reliably taste.

Separate strength from flavor balance

A strong cup can still be sour or unfinished. A weaker cup can still taste dry and bitter. Ratio mainly helps shape concentration, but the flow of water through the grounds also affects which flavors enter the drink.

Before changing the recipe, describe the problem in plain language. Does the coffee taste balanced but overpowering? Is it pleasant yet watery? Or does it have an unpleasant sharpness or rough finish regardless of intensity?

Balanced but strong coffee often benefits from simple dilution. Unbalanced coffee needs attention to extraction, such as grind, temperature, or pouring. Adding more grounds to a sour recipe can make it more intensely sour.

Use dilution as a quick comparison

Brew your normal recipe and divide it between two cups. Add a small measured amount of hot water to one portion. Let both reach a similar drinking temperature, then compare them.

If the diluted portion is easier to enjoy and reveals more flavor, you may prefer a lighter concentration. This test does not perfectly reproduce brewing with more water, because that would also change extraction, but it helps identify your strength preference.

If dilution makes the coffee empty without removing the unpleasant finish, concentration probably was not the main problem. Return to the brewing variables instead of stretching the ratio further.

Let the coffee influence the choice

A delicate, aromatic coffee may shine with a lighter presentation. A chocolate focused roast may be satisfying at a somewhat richer ratio, especially if you add milk. Your serving context matters as much as the label on the bag.

Use a manageable range rather than chasing a universal ideal. Compare one meaningful step at a time over several cups. Differences that seem dramatic in a tiny tasting spoon can matter less in the full mug you drink at breakfast.

Keep your grinder setting steady for the initial ratio comparison. After selecting a preferred intensity, refine the grind if the altered water amount has changed drainage or balance.

Keep a personal default

Write down the dose, brewing water, and whether you drink the coffee black. That gives you a useful home recipe to begin from with a new bag.

A ratio is successful when the cup remains enjoyable from the first comfortable sip to the last. If you repeatedly leave coffee unfinished because it feels too heavy, choose a lighter serving. If it disappears into milk, try more concentration. Your preference is the point of the exercise.