Water is the most important part in coffee drinks because it makes up 98% of it.
Magnesium Ions, Calcium and Sodium play significant role during  the extraction.
Magnesium has the biggest influence on the extraction effect. Calciumn has slightly smaller influence.

Recommendation:

  • Before you will use water, taste and smell it. If you do not like the smell, or you feel that there is something wrong  with the water, do not use it.
  • Buy good water. The best quality water is usually  in glass bottles. Check  composition of the water, on the label.
  • Use filter water.
  • Natural mineral water is an excellent choice.

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