Coffee common sense what is the most suitable temperature for fragrant espresso
Espresso commonly used temperature: 90.5C
Forgetting who measured this temperature may be the result of a long trial, just like traditional Chinese medicine, rituals and experience all play a role. If the temperature is lower than this, espresso will become sour, while higher will be bitter. This is not fooling people casually. For a while, the temperature of my coffee machine dropped to more than 80 degrees, and the aftertaste of the espresso became very astringent. I thought it was the bean problem. Later, I used the temperature to measure the water temperature to find out the problem.
But 90.5 degrees is not a standard value, a senior brista will understand that air pressure and other factors can also affect coffee, high altitude areas will increase a small temperature to match coffee beans, and French filter pot coffee making, the temperature will often be as high as 95 degrees. So don't trust coffee drinkers who spread the temperature as if it were a Bible.
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Coffee roasting in 45 seconds is the most critical in coffee life.
The most critical 45 seconds of coffee life is on Lize Road in Beijing, at the intersection of South Square Road of West Railway Station, there is an inconspicuous workshop. The host is Uncle Dou, a member of the European Fine Coffee Association. When he saw Uncle Dou, he was in front of a big stove, telling the story of coffee to 20 admiring enthusiasts. This big stove is highly respected by professionals.
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The main chemical composition of raw coffee beans is carbohydrate.
Main chemical components of raw coffee beans: content (%) carbohydrate 60.0 reducing sugar 1.0 sucrose 7.0 pectin 2.0 starch 10.0 garrison 5.0 hemicellulose 15.0 holocellulose 18.0 lignin 2.0
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