The aroma of hand-brewed coffee is the life of coffee quality
Aroma:
Aroma is the life of coffee quality, and it can best represent the coffee production process and baking technology, as well as the climate, elevation, variety, refined treatment, harvest, storage, and the appropriateness of baking technology in the consuming country. The results of gas chromatographic analysis showed that the aroma of coffee was composed of acid, alcohol, acetaldehyde, ketone, ester, sulfur compound, phenol, nitrogen compound and nearly hundreds of volatile components. Generally speaking, fat, albumen and sugars are important sources of aroma, while lipids blend with the sour and bitter of coffee to form a smooth flavor. Therefore, the disappearance of fragrance means that the quality is getting worse, and the relationship between aroma and quality is very close.
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The taste of a single cup of coffee the bitterness of coffee
The bitterness of coffee: the color, aroma, and taste of coffee are caused by complex chemical changes that take place during roasting. Therefore, raw beans must go through appropriate chemical procedures to achieve the most balanced state of its essential ingredients in order to be regarded as the best baked beans. The aroma of coffee will change with the heat, so the baking time should be shortened as much as possible, and the coffee is hot.
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The usual temperature of espresso espresso is 90.5C
Espresso common temperature: 90.5 degrees Celsius forget who measured this temperature, may be the result of a long-term 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 a casual fool. There was a time when the temperature of my coffee machine was as low as 80 degrees, es.
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