How many degrees of water is the best for making coffee in winter? the best temperature of hand-brewed coffee is recommended.

I wonder if my friends have found such a problem in making coffee recently, that is, when making coffee with the same parameters as usual, the taste of the coffee is lighter than before, and the sweetness is not so obvious.

In fact, the reason for this phenomenon is that the recent cold weather also affects the temperature of the water when we make coffee. If you pour the water into the hand pot as in Qianjie, and then measure the water temperature with a thermometer, you will find that the water temperature drops much faster than usual.

When we brew coffee, there is an obvious difference between the set water temperature and the actual brewing water temperature. Generally speaking, the brewing water temperature of 91 °C refers to the water temperature in the pot. The actual extraction temperature of the coffee injected into the coffee must be lower than 91 °C, because after the water flows out of the spout, it will pass through the cooler air and into the coffee powder layer will be sucked away by the normal temperature coffee powder. During the extraction process of almost 2 minutes, the temperature in the hand flushing pot is also losing, and the extraction temperature in the filter cup is also losing.

Qianjie tested the water temperature of the powder layer in summer. when the initial water temperature was 90 °C, the temperature of the main extraction stage after steaming decreased between 86.2 °C and 84.5 °C. On the other hand, Qianjie also uses the initial water temperature of 90 °C to brew coffee, and the temperature of the main extraction stage decreases between 85.1 °C and 83.8 °C.

Therefore, after the environment becomes lower, although the original constant water temperature is still used, the temperature of the powder layer during extraction is actually lower than before. So the coffee will be sour than before, the flavor is not so rich and full. To solve this problem, it is also very simple, that is, to increase the water injection temperature, generally 2 °C higher than usual. For example, the front street usually uses 91 °C to brew coffee, and 93 °C to make coffee when the room temperature is slightly lower.

In addition to increasing the water temperature, you should also pay attention to some heat preservation measures in the brewing process, so that your water temperature does not drop too fast. For example, remember to cover the lid when making coffee, pour out a little hot water before making coffee, and preheat the spout. Do not pull the water column too long when injecting water. The larger the surface area of the water column exposed to the air, the more obvious the temperature loss will be. It is generally enough to maintain the water injection height of 3-5cm.