How many grams of coffee per liter of water?
The standard 'golden ratio' for brewing coffee is approximately 60 grams of coffee per liter of water. This ratio, often recommended by the Specialty Coffee Association, provides a balanced extraction that is neither too weak nor too strong. Depending on your personal taste and the specific brewing method, you can adjust this range between 55 and 65 grams per liter.
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Achieving consistency in your home brewing starts with a reliable ratio. Using a scale to measure both your coffee and your water is the single most effective way to improve the quality of your coffee. The 60g/L ratio is a widely accepted starting point because it aligns with the extraction yields that most specialty coffee professionals aim for—typically between 18% and 22% of the coffee's mass being dissolved into the water.
If you find that your coffee tastes weak, watery, or lacks flavor, you are likely under-extracting or using too little coffee. In this case, you might increase your ratio to 65g/L. Conversely, if your coffee tastes harsh, overly bitter, or 'heavy,' you might be over-extracting or using too much coffee, and you could try decreasing your ratio to 55g/L. It is important to note that changing your ratio will also change the strength of the coffee, which is distinct from the extraction level.
When applying this to your daily routine, remember that the ratio is just a starting point. Different brewing methods may require slight adjustments. For example, immersion methods like the French press often benefit from a slightly higher ratio to compensate for the way the coffee interacts with the water over a longer period. Pour-over methods, which are more efficient at extraction, often work perfectly within the 60g/L standard. The key is to keep your ratio constant while you adjust other variables like grind size or water temperature.
In practice, using a digital scale is non-negotiable for those who want to move beyond 'eyeballing' their measurements. By keeping your ratio consistent, you eliminate one of the biggest variables in your brewing process, allowing you to focus on dialing in your grind size to achieve the perfect flavor balance. Whether you are brewing a single cup or a full liter, the math remains the same: 60 grams of coffee for every 1000 grams (or 1 liter) of water. It is a simple, repeatable habit that will transform your home coffee experience.
- · https://sca.coffee/research/coffee-standards