Factors affecting the taste change of coffee during coffee making
1. Water quality: like making tea, coffee must pay attention to water quality. Water containing large amounts of iron and alkaline hard water should not be used. The most ideal water should be distilled water. In addition, there are certain requirements for water temperature, the water temperature should be between 80 ℃-90 ℃, do not use boiling water, otherwise it will increase the bitterness of coffee and reduce the quality of coffee.
2. Soaking time
As coffee contains caffeine and aromatic oil, soaking time should not be too long, usually soaking for about 2 minutes, too long soaking not only destroys the flavor of coffee, but also causes floating matter on the coffee liquid and makes the coffee turbid.
3. utensils
It is most appropriate to use glassware and ceramic utensils to make coffee. If metal utensils are used, it will oxidize, giving the coffee an unpleasant taste.
4. Dosage
The amount of coffee should be determined according to the size of the coffee particles and the preference of the coffee drinker. Usually fine powdered coffee is less than fine granular coffee, while coarse granular coffee is about 15% more than fine granular coffee. If you brew 40-50 cups of coffee with 500 grams of coffee, it is espresso.
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A brief analysis of several steps and functions in coffee making
1. Roasting and roasting of coffee is an important process of making coffee. Roasting is to stir-fry the coffee beans, but the time should not be too long. There are three kinds of roasting: light roasting, cinnamon roasting and thick roasting. Roasted coffee beans make the aromatic oil dissolve in water and give off a fragrance, but some of the fragrance evaporates away. At present, it is more popular to roast coffee beans quickly with charcoal fire, which can make the coffee fragrant.
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Matters needing attention in Coffee Service in Cafe Operation
1. Choose high-quality coffee and do not store it in large quantities, otherwise it will affect the quality and flavor of the coffee. 2. The corresponding coffee brewing time is determined according to the thickness of coffee particles. 3. Choose high-quality water, and the ratio of water to coffee should be appropriate. Usually put 100 grams of water for every 10 grams of coffee. 4. Coffee had better be boiled and drunk, otherwise it will affect the taste of coffee and make it lose its fragrance.
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