Introduction to the production process and main ingredients of coffee
The main ingredients of coffee
Caffeine: it has a particularly strong bitter taste and stimulates the central nervous system, heart and respiratory system. Appropriate amount of caffeine can reduce muscle fatigue and promote digestive juice secretion. It promotes kidney function, has a diuretic effect, and helps the body expel excess sodium ions from the body.
Tannic acid: the boiled tannic acid will decompose into pyrouric acid, so the coffee that has been brewed for too long will taste worse.
Fat: the most important ones are acid fat and volatile fat. Acidic fat, that is, fat contains acid, its strength will vary according to the type of coffee; volatile fat is the main source of coffee aroma, it will emit about 40 aromatic substances.
Protein: the main source of calories, the proportion is not high. Most of the protein in coffee powder will not dissolve out when brewing coffee, so the intake is limited.
Sugar: coffee beans contain about 8% sugar. After baking, most of the sugars are converted to caramel, which browns the coffee and combines with tannins to produce sweetness.
Fiber: the fiber of raw beans will be carbonized after baking and combine with caramel to form the hue of coffee.
Minerals: contains a small amount of lime, iron, phosphorus, sodium carbonate and so on.
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What is the recent storage time of moderately roasted coffee beans?
Unroasted coffee beans can be kept dry and unroasted for several years. During baking, the oil of coffee beans moves to the surface and spoils quickly. Therefore, after the coffee beans have been roasted, the storage mode becomes particularly important. Roasted coffee beans whole coffee beans that release oil can be placed in an airtight container and placed in the shade.
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The United States: there are no taboos about the unique coffee drinking habits of American style.
When Americans drink coffee, it is like playing a game without rules, laissez-faire without taboos. Americans are dismissive of all kinds of exquisite coffee made by Europeans. Americans drink coffee freely, and at the same time, coffee goes deep into their lives and is difficult to separate, and the influence is so deep that it is not considered a life without coffee. It is said that Apollo carried a man to the moon for the first time.
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