An auxiliary tool for coffee making-- thermometer

Temperature is very important for making coffee. The aroma of coffee is divided into three stages: the dry aroma at room temperature, the wet aroma when hot water is brewed, and the aroma after the entrance of coffee. Except for the dry aroma at room temperature, the other two stages rely on the temperature brought by hot water, which gives off a pleasant aroma. If the water temperature is too high, it will make the coffee burnt or smoky, and the entrance will be difficult to swallow, while too low temperature will lead to insufficient extraction, which may cause flavor loss. Therefore, the proper water temperature is very important for the extraction of coffee aroma. I have seen many talented people use this method to test the temperature, "you can't hold your finger in the water, xx degree, you can wait for xx seconds, how many degrees is it?" I am not saying that this method is not accurate. First of all, it is a method of measurement based on experience, which requires you to accumulate a certain amount of practice before you can do it. In addition, this standard varies from person to person, such as a cook and an office clerk. I think the degree of "heat resistance" of their fingers is different. Therefore, I admire those who already have this perception system, and I also advise beginner coffee lovers that drinkers can use some standard tools to measure the temperature-- all kinds of thermometers.

At present, there are two kinds of thermometers on the market, one is electronic thermometers, and the other is mechanical thermometers that measure temperature through the physical effect of metal thermal expansion and cold contraction (let's call it mechanical here!).

These two kinds of thermometers have their own advantages and disadvantages:

Electronic thermometer:

Advantages and disadvantages

The reflection speed is fast, the volume is relatively large, and the probe line is too long.

Accurate use of batteries

The measured temperature range is large and the price is relatively expensive (50-300 yuan)

(even more than 500 degrees Celsius can be measured after changing the appropriate probe.)

Mechanical thermometer:

Advantages and disadvantages

Small size, easy to carry and slow reaction speed

The price is relatively cheap (20-40 yuan) is not accurate

(due to the difference in metal expansion, it is possible that several thermometers measure the same

There is an error in the display of a glass of water

Small range (below 100 degrees Celsius)

Although these two kinds of thermometers have their own advantages and disadvantages, either is enough for making coffee (the required temperature is between 80 and 90). After all, coffee is made just to get that touch of fragrance, not an accurate chemical experiment. although the thermometer is necessary, but not very accurate, in line with your budget and use requirements, the choice of economical and durable is the best choice.