The basic coffee beans must be ground when drinking single coffee.
When you smell coffee powder, it indicates that it is deteriorating and the essence of coffee is decreasing.
If the diameter of coffee powder is doubled, the volume of individual particles is reduced by 1/8, and the surface area of the total coffee powder is doubled accordingly. After coffee beans are ground into coffee powder, their surface area increases exponentially, and the area in contact with air increases hundreds or thousands of times.
Roasted coffee beans contain extremely important acidic fat and volatile fat once they come into contact with air, they will undergo biochemical changes and taste and aroma will deteriorate. Esters and aldehyde enzymes in coffee aromatization are the most volatile, which will make the taste of coffee worse.
Not only is the volatile loss of aromatic substances, but oxygen in the air also oxidizes aromatic components, especially fats, to produce the smell of F·B. Freshly ground coffee quickly absorbs moisture from the air, adding weight and reducing the effectiveness of the extracted coffee ingredients. Internal molecular pressure complicates matters further.
Therefore, the coffee powder bought in the store for a long time can only be used as coffee "mummy fragments", because the coffee powder loses a lot of flavor; in order to have a good cup of coffee, you must not buy coffee powder conveniently.
In addition, even if it is roasted coffee beans, coffee aroma is also very easy to emit, roasted coffee beans that are well preserved for more than one week to two weeks, are already not fresh, so not only fresh ground, but also as far as possible to choose fresh roasted coffee beans.
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When brewing a cup of strong coffee, how much should the water temperature be?
When brewing a cup of strong coffee, how much should the water temperature be? Should the brewing speed be fast or slow? Yoshiki Hashimoto, who has experience in identifying coffee beans, said that the quality of coffee beans directly affects the taste and aroma of coffee, and good coffee beans should be medium-sized, full-grained and have the natural luster of seeds. He said that among the thousands of coffee beans, it is more suitable for China.
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It is a good habit to drink coffee in moderation.
The coffee is mellow and smooth, refreshing and refreshing, so that people don't look very lethargic. Coffee is also a favorite of many white-collar women. In the cold winter day, holding a cup of warm coffee, the aroma overflows, the sentiment immediately has. However, many women are worried about whether drinking too much coffee will affect their health. Can I have coffee during my period? Next, let's just...
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