What is the primary benefit of using filtered water in coffee brewing?

Using filtered water in coffee brewing significantly improves flavor quality, which is the primary benefit. Water quality has a direct impact on the extraction process and the overall taste of the brewed coffee. Impurities in unfiltered water, such as chlorine, minerals, and other contaminants, can negatively affect the flavor profile, masking the coffee's inherent qualities and flavors. By using filtered water, these unwanted elements are removed, allowing the natural flavors and aromas of the coffee beans to shine through. This leads to a cleaner, more balanced cup of coffee that highlights the nuances of the specific coffee being brewed.

Other factors, such as longer shelf life, lower cost, and higher caffeine extraction, are not primarily associated with the use of filtered water for brewing coffee. While these aspects may have their own merits in different contexts, the direct correlation between filtered water and improved flavor quality is the most significant advantage in the brewing process.