How water quality influences taste and which type of water is ideal.

Wie die Qualität des Wassers den Geschmack beeinflusst und welche Wasserart ideal ist.

Did you know that water quality plays a central role in the perfect pour-over coffee? Not only the coffee beans or the grind size determine the taste, but also the water quality. In this article, you will learn how the quality of the water influences the aromas and which type of water is best suited for pour-over coffee.

Water quality for the perfect Pour Over

You can find everything about pour-over coffee here in our article overview.

Why is water quality so important?

The reason why water is so crucial for coffee preparation is that coffee consists of about 98% water. The water not only influences the extraction of coffee oils and aromas but also the texture and clarity of the finished cup. Poor water quality, for example, water that is too hard or contains chlorine, can negatively affect the taste.

What water hardness is ideal for pour-over?

Water hardness refers to the content of minerals such as calcium and magnesium in the water. For pour-over coffee, a medium water hardness is ideal. Water that is too hard (with high mineral content) tends to make the coffee bitter, while water that is too soft can make the coffee taste flat and underdeveloped. A mineral content of about 50-150 ppm (parts per million) is often considered optimal.

How does excessively hard water affect coffee?

Hard water contains many minerals that can negatively affect the extraction of coffee oils and aromas. The result is often an excessively bitter or metallic taste. In addition, hard water leaves limescale deposits that can damage not only your coffee pot but also the filter holder or carafe.

How does soft water affect pour-over?

Soft water, on the other hand, contains few minerals. This leads to the coffee not being sufficiently extracted, resulting in a watery or underextracted coffee. The aromas cannot fully develop, and the coffee loses complexity.

Which water source is ideal for pour-over?

  • Filtered tap water: Tap water is the most common water source in most households, but it should be filtered to remove chlorine and other impurities. A simple water filter can significantly improve the quality and optimize the taste of the coffee.
  • Mineral water: High-quality, bottled mineral water can be a good choice, as long as it does not contain too many minerals. Pay attention to the label and choose water with a mineral content between 50-150 ppm.
  • Osmosis water: Reverse osmosis removes almost all minerals from the water. Although this can lead to very clear coffee, it is ideally recommended to add a small amount of minerals back to the water to brew the perfect coffee.

The role of water temperature

In addition to water quality, the temperature of the water is also crucial. For the perfect pour-over coffee, the water should have a temperature of about 92-96°C. Water that is too hot can burn the coffee beans and lead to bitter coffee, while water that is too cold does not fully support extraction.

Tips for optimal water quality

  • Use filtered water: If you use tap water, invest in a water filter to remove chlorine and impurities.
  • Avoid distilled water: Completely mineral-free water leads to a flat taste.
  • Check water hardness: Use a test kit to determine the water hardness in your region and, if necessary, take measures to achieve the correct quality.

Conclusion

Water quality has a great influence on the taste of pour-over coffee. Whether you use filtered tap water or high-quality mineral water – make sure the water has the right hardness and quality to extract the best aromas. Combine this with the right water temperature, and you will enjoy a perfect pour-over coffee.

You can find everything about pour-over coffee here in our article overview.