Which coffee cup temperature is the best? Does the coffee cup need to be preheated? Do hand-brewed coffee cups need to be refrigerated?

As we all know, most coffee aromas are volatile, and their evaporation speed will be affected by temperature. The higher the temperature of the coffee, the faster the aroma evaporates, and vice versa. The aroma of coffee is generally dissolved in large quantities in the early stage of extraction and then continues to evaporate. If we want to feel more aroma from a cup of coffee, in addition to improving the extraction rate of coffee, we can also cool the initially dissolved coffee liquid to delay the evaporation of aroma.

The very popular Paragon Golden Globe in the past two years was born for this purpose. As long as we use this stainless steel ice ball when making coffee, the "cold air" emitted by its body can quickly freeze the coffee liquid that is initially dissolved., thereby "locking in" the aroma of the coffee (delaying the evaporation of the aroma), so that we can feel a richer aroma expression in the cup. Then a friend asked below: "According to this theory, can a frozen cup have the same effect? Or, the lower the temperature of the container we use when making coffee, the more coffee aroma will be retained? "

Very good! So today, we will use cups at three different temperatures: high temperature, normal temperature and low temperature on Qianjie to experiment to see if the temperature of the cup can really affect the aroma of coffee~

In fact, such experiments had been done before Qianjie, but the cups used in comparison at that time were refrigerated cups. Perhaps because the temperature was not low enough, the final result was not much different from the room temperature cups. Therefore, this time, Qianjie will be more determined and use frozen cups to conduct a comparative experiment! (Good children don't learn)

Then the coffee bean used this time is Kenya Assalia. Its flavor and taste are very outstanding, so if the temperature of the cup affects the coffee itself, the change will be more obvious and can be better. Show the impact of the cup. Similarly, in order to ensure that the impact of human brewing is reduced, we will still use a shower drip filter to assist in this brewing. The extraction parameters are the same, as follows: powder amount used: 15 g, grinding degree: 9.5 scale of EK43, 75% sieving rate of No. 20 sieve, grinding of fine sugar, powder and water ratio: 1:15, brewing water temperature: 92 ° C, brewing method: three-stage, using filter cup: V60, extraction time: 2 minutes. (Process skips)

(From left to right: high temperature cup, room temperature cup, low temperature cup/frozen cup) High temperature cup coffee: High temperature cup is a cup preheated with hot water before brewing. When we use this cup as a container for hand-brewed coffee, the temperature of the final coffee will fall to around 71 ° C. Coffee smells very rich in aroma, but it will be a little hot when drinking. The taste and flavor are not obvious because of the high temperature. You can only drink a little sweetness of caramel and a faint dark plum acid. But after the temperature dropped, the flavor and taste immediately became prominent.

Room temperature cup coffee: Room temperature cups are cups stored at room temperature. When we use this cup as a container for hand-brewed coffee, the temperature of the final coffee will fall to around 68 ° C. Coffee smells equally rich, but it tastes less hot than the previous cup. Therefore, this cup of coffee can be drunk with obvious flavors, including dark plum and small tomatoes. In the same way as the previous cup, when the temperature drops, the flavor and taste begin to emerge.

Low-temperature cup coffee: The low-temperature cup here is an ice cup that has been frozen in the freezer of the refrigerator. When we use this cup as a container to accept hand-brewed coffee, the temperature of the final coffee will fall to about 62 ° C. This cup of coffee does not smell as rich as the previous two cups, but because this temperature is not hot and it is very easy to eat, compared with the previous two cups, the taste and flavor of this cup of coffee will be more prominent. Black plum, young tomatoes, fragrant pears, caramel, sweet and sour! To make sense, although the flavor and taste of three cups of coffee are different when you drink it first, the flavor at the entrance of the high-temperature cup is the weakest among the three cups, the room temperature cup is moderate, and the ice cup coffee is the best. But! The main source of the difference is not the amount of aroma, but because the temperature of the coffee changes our perception of taste.

When the temperature of high-temperature cups of coffee and room-temperature cups of coffee drops, they will also have the same taste performance as low-temperature cups of coffee. This is because high temperatures will reduce the "sensitivity" of our tongues, making us unable to feel the taste and flavor of coffee well. When the temperature drops, we can naturally capture a more comprehensive performance of coffee. The impact of temperature on taste has been shared many times before, so the specific theory will not be repeated here. Interested friends can search for relevant content in the past. And whether there is a big difference in aroma... The feeling on the front street is similar. Like the small gold ball, it is more affected by the temperature.

To sum up, we can know that the temperature of the cup can indeed affect the coffee, but the more impact is on the temperature. Although the results will be a little different from what we imagined, this is not a bad thing. After learning that the temperature of the cup can affect the temperature of the coffee, we can more flexibly choose containers with different temperatures for coffee brewing according to different weather or environment. For example, in cold weather, we can preheat the container for receiving coffee according to the usual practice, so that the brewed coffee can maintain a higher temperature and prevent the coffee temperature from dropping too fast; If the ambient temperature is suitable and guests want to have a full flavor in the first sip, they can choose to use a room temperature cup or add a small golden ball (ice cups are not recommended~) to cool the coffee. In this way, guests can quickly experience the flavor and taste of the coffee~(In short, come as happy as you are)

- END -