The roasting degree of coffee beans has four kinds of common sense of coffee roasting.
Roasting causes coffee to produce coffee oil, which gives coffee a strong aroma. The most outstanding feature of this fragrance is that it is volatile and soluble in water. Therefore, people can not only smell the mellow smell of coffee beans, but also pour it into the cup and taste it carefully.
Coffee is roasted to the following degrees:
Light baking with a light fragrance and high acidity is one of its major features. (Swiss Bakery)
Medium baked with high acidity and a hint of mellow aroma.
Deep baking with a slight bitterness accompanied by a rich mellow aroma. (Italian baking)
Very deep roasted coffee with a bitter taste and a carbon ash flavor that is baked for special coffee lovers. (French baking)
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Baking principle of coffee beans roasting of fine coffee beans
To do a good job in baking, every production link can not be ignored, the selection of materials should be fastidious, the weighing of materials should be accurate, and the operation should be careful. Baking is a science. To understand the principle of baking, we must first understand the three ways of heat conduction, convection and radiation. Conduction refers to when the heat is transmitted by the heat source, causing the surrounding molecules to vibrate and release heat, gradually moving from the high temperature to the low temperature. Conduction of stainless steel
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There are mainly several kinds of acids in roasted coffee.
Formic acid is the most in shallow baking, and acetic acid is the most in shallow baking with the deepening of deep baking. with the deepening of deep baking, pyruvate and baking degree-independent lactic acid and baking degree-independent malic acid are the most in shallow baking, and citric acid is the most in shallow baking with the deepening of deep baking.
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