What is the TDS value of hand-brewed coffee water? what is the effect of hand-brewing coffee?

In order to make good coffee, you need not only good beans, but also good water quality. Water accounts for more than 98% of the coffee brewed. Therefore, it is also very important to choose the right water to make coffee. So what kind of water is suitable for making coffee?

First of all, let's talk about the requirements of water suitable for making coffee in front of the street. Generally speaking, there are two requirements for water in making coffee, one is hardness, the other is pH. First of all, in terms of hardness, water that looks clean in nature is not pure water that contains nothing. Water generally contains calcium, magnesium, potassium, sodium and bicarbonate ions. And these substances in the water will affect the hardness of the water, generally hard water is not suitable for brewing coffee.

Because the TDS data can only show the amount of soluble matter in the water, and can not clearly know the composition and content of the substance. A small amount of magnesium ion in water can improve the sweetness and aroma of coffee. Therefore, water containing appropriate amounts of calcium and magnesium ions is very suitable for brewing coffee.

The pH of the water will also affect the taste of coffee. 7 in ph means neutral. The smaller the number, the greater the acidity, and the greater the number, the greater the alkalinity. Low acidity of coffee with a ph value of 5-6. Generally speaking, coffee made from brewing water with a ph of 6.5-7 will be more delicious. According to the above conditions, tap water should be excluded first. The TDS value of tap water in general areas is on the high side. You can observe whether there is a layer of white scale in the boiling kettle at home. Even if the tap water in some areas meets the TDS standard for coffee water, there will be trace amounts of chlorine in the tap water, so we will smell the tap water like swimming pool water, and the coffee washed out will show a sandy taste and taste very mixed. If you use a filter to filter tap water in your home, you also need to test the TDs and try to cook it to see if the taste has improved. Because the filtering effect of some filters is not good, the filtered water is still not suitable for brewing coffee.

Secondly, pure water, which contains nothing, is not suitable for making coffee. The front street also said that the right amount of calcium and magnesium ions can promote the extraction of coffee. Improve the sour, sweet and aroma of coffee. And without any substance of pure water, the coffee will have an inexplicable sense of emptiness, the lack of sweetness and aroma will make the acid sharp. The last thing that is easier to use is mineral water. If you choose and buy mineral water, you must look at the mineral content on the label and never judge the quality of water by price. For example, the high price of Evian water, the TDS is 489ppm, which is much larger than the maximum TDS of coffee water, so it is not suitable for coffee brewing. If you need to buy mineral water to make coffee, it is best to take a look at the TDS value on the label and the scale of various minerals.

Finally, if you want to ask what kind of water to use to make coffee, the most likely answer is Nongfu Spring.