The technology of making coffee is very technical in making iced coffee.

The last thing I want to order when drinking coffee in a cafe is iced coffee. So far, I have drunk all kinds of iced coffee in various places, and none of them has been satisfactory. Even a shop that can make hot coffee often falls on iced coffee.

Most cafes can make affordable hot coffee if they are willing to spend some money on machines and raw materials. If the guest orders fancy coffee with milk, sugar, or even wine or various spices, the store is more likely to get flattering points.

But making iced coffee, without excellent technology, is too easy to show flaws. A large cup of ice is cold, the ice is squeezed against each other, and the syrup is not evenly mixed even because the temperature is too low. It tastes like an uneven-looking woman, how embarrassed it is. This kind of coffee tastes sour, because after it is cold, after a period of time, it will release its sour taste; if you even drink an astringent taste, don't ask, the iced coffee must not be freshly made. Probably a big pot of ice has already been made in the freezer and temporarily poured it out for you.

Even if the shop is serious, fresh hot coffee on the spot, put it in a snow pot and shake it skillfully, even the ice cubes are made of the same type of coffee prepared in advance, it is still difficult to guarantee the taste, because we have to pay attention to water.

When I moved from Guangzhou to Beijing, I wailed in my heart when I washed the cup under the faucet for the first time. The whole country knows that Beijing's water quality is poor, and in this respect, perhaps only Shanghai dares to compete with it for the word "worse". The tap water from the faucet is as muddy as cream. Check on the Internet, the hardness of water quality in Beijing is mostly concentrated in the range of 400-450mg/l, which has just reached the lowest standard for the quality of domestic water in the world. The government issued a notice saying that the water quality in Beijing has not yet exceeded the standard, is it? ordinary people also comfort themselves: Beijing is so big, how many rich and powerful people live, people are willing to live, what are we afraid of-- but can the government's words be trusted? Is it possible for those privileged classes to transfer water from places with good water quality such as New Zealand and Canada?

In any case, the water quality in Beijing is poor, which gives me another reason not to order iced coffee. The water quality is too hard and the content of magnesium and sodium is high, which will make the coffee have an astringent taste of metal. If it is iced coffee, even heavy sugar can not suppress that taste.

Speaking of, coffee is still suitable for hot drinks, not to mention the taste, the aroma of hot coffee alone, has given people how much warmth and reverie. Even by the standards of cold drinks, iced coffee has a weak sense of existence. Unfortunately, I have seen a lot of people who return the beer because the beer is not cold enough, but few people are particular about iced coffee.