When brewing coffee with a coffee machine, water quality is key

The influence of water quality on coffee brewing

When using a coffee machine to make coffee, water quality is a very important factor. Different water quality will directly affect the taste and mouthfeel of the coffee. The following will discuss the impact of water quality on the coffee brewed by the coffee machine from several aspects.

hardness

Hardness refers to how much metal ions such as calcium and magnesium are dissolved in water. High-hardness water will cause coffee to contain more dissolved substances, which will react with the chemical components of coffee beans, thus changing the original taste and aroma.

In addition, high hardness can easily lead to the accumulation of sediment in pipes and nozzles, reducing flow and pressure, and increasing the difficulty of cleaning and maintenance.

Therefore, when choosing water for the brewing process, we should try to choose pure water that is relatively softened or has been properly softened (such as through a filter) and has an appropriate hardness value range (usually 50-150ppm).

pH

The pH of coffee has an important influence on its taste and flavor. Generally speaking, the best pH range for coffee is between 6 and 7. Too high or too low a pH value will make the coffee taste bitter or bland.

Therefore, when choosing water for brewing coffee, we should try to choose pure water with a pH value within an appropriate range (usually 6.5-7).

Chlorine content

Chlorine is a common disinfectant in tap water, but high concentrations of chlorine can have adverse effects on the substances contained in coffee beans and change their original aroma and taste.

Therefore, when using tap water to make coffee, we can place it in a container and let it sit for a while in advance to allow some of the chloride to evaporate; or use pure water that has been treated with a filter to remove most of the residual chlorine and meets drinking standards (usually less than 0.05 mg/L) for brewing.

Summarize

In summary, the influence of water quality on coffee brewing by coffee machine cannot be ignored. Hardness, pH value and chlorine content will directly affect the taste and mouthfeel of coffee. Therefore, when choosing water for brewing, we should try to choose pure water with appropriate hardness, pH value and low chlorine content.

By choosing the right water quality and performing regular cleaning and maintenance, we can ensure that the coffee brewed by the coffee machine always maintains the best quality.