Coffee brewing | how much does the water temperature affect the coffee? How does temperature affect the flavor of coffee?

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How does the water temperature affect your coffee?

In the brewing process, water and coffee will undergo some complex chemical reactions, and the water temperature will directly affect the extraction rate of different components in the coffee during brewing. Water extracts quinic acid, amino acids and tannins, caffeine, oils and other substances from coffee. During the cooking process, different stages produce different reactions.

So how on earth does the water temperature affect it? The higher the temperature of the water, the faster the extraction rate, many different factors will affect the flavor of coffee, so the extraction rate should be controlled very carefully when brewing.

High temperature extraction

It will be difficult to control the extraction, and some undesirable flavors and ingredients will be released quickly. High temperature cokes the fine coffee powder quickly, and [charred coffee] is usually used to accurately describe coffee with defective flavor control under high temperature extraction.

Low temperature extraction

If the water temperature is not enough, the coffee can not be extracted correctly, and the extracted coffee will have a little astringent and sour taste. But low water temperature also has a way to make good coffee, which is to prolong the soaking time of water and coffee powder.

The way to make good coffee at low water temperature

Cold extracted coffee

Put the ground coffee powder into a container containing cold water at room temperature, then store it in a cold storage environment for 20-48 hours, remove and filter.

Ice drop coffee

Using ice drop kettle to make coffee powder for a long time at low temperature extraction, some coffee substances have not been completely extracted, so avoid a lot of bitterness, miscellaneous flavor, but the coffee is smooth taste, a touch of acidity and sweetness, so that coffee taste full of juice, but also let more people accept.

Prolonging the extraction time and adjusting the grinding degree may not well compensate for the low water temperature, which will still give the coffee a strong acidity and low alcohol thickness. This is because acid is the first substance to be extracted. Without the release of oil and the proper extraction of sweetness and bitterness, a cup of coffee cannot have a balanced taste, so it is important to use the correct water temperature.

Poor equipment can also affect the water temperature.

Water temperature is very important for coffee, not only to be set before brewing, but even if there is no very special brewing plan, we prefer the consistency of coffee brewing: the consistency of water temperature, the consistency of water thickness and speed, and so on.

Appliances are also critical to water temperature. If there is no good thermal insulation kettle body, good heating equipment, it is impossible to maintain consistency.

For example, Italian concentration is very demanding on machines, and well-equipped boilers can solve many problems in the production of Italian concentration; for hand-brewed coffee, controlling the water temperature will be more challenging, so you should pay more attention to the quality when buying temperature-controlled pots to ensure that the water temperature is correct when it comes into contact with coffee powder.

Baristas should also train how to keep the water temperature consistent.

In addition to the equipment, there is also technical control of the water temperature. For example, while the coffee is extracted, the barista will pour hot water into the coffee cup to warm the cup, and then pour the brewed coffee into the warm cup for tasting and serving.

Therefore, the daily barista training is also very fastidious, not only to understand the preheating coffee pot, coffee cup, but also the method of brewing and so on. For example, why do we keep the coffee powder soaked and wet when we inject water? this is to keep the water temperature consistent and extract more evenly.

Water temperature has a very important effect on coffee, and even determines the quality of a cup of coffee to a great extent. Make sure that the equipment you use can help you with accurate extraction in order to produce a high-quality coffee flavor. Good coffee beans are also hard to come by. We should treat them well and let them show the best flavor.