Water is extremely important in coffee-brewing (it is the majority of the beverage, after all). While brewing, the hot water extracts tastes from the grounds to turn plain water into delicious coffee. This happens through chemical bonding, where the particles in the coffee bond to the particles in the water. Differences in water can disrupt this process and undermine the deliciousness of the coffee. There are two common problems people make with water choices, and both are easily avoidable.
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