lead dissolution Learn more about lead dissolution
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The amount of lead released from the century-old "German Gaobao" coffee cup exceeded the standard by more than 4 times.
Professional barista exchanges please pay attention to the coffee workshop (Wechat official account cafe_style) the Ministry of Health and Pharmaceuticals Department today released the latest list of unqualified products at the border. Last month, Hong Kong Shang Chong Meng Xingye Taiwan Branch imported a batch of century-old German Gaobao porcelain coffee cup and plate sets from Poland. The inspection found that the dissolution of lead was as high as 93 units, nearly 4.5times higher than the standard, with a total of 0.28kg.
2017-09-06 Century German Gaobao coffee cup lead dissolution amount unexpectedly exceeding the standard 4 times professional coffee -
Watch out for the dissolution of heavy metals when drinking coffee in metal cups
Metal cups, such as stainless steel and enamel cups, are usually stable, but they may dissolve in an acidic environment, so it is not safe to drink acidic drinks such as coffee and orange juice. When the cup is filled with boiled water or drinks with high acidity and alkalinity, these
2014-06-13 Coffee and health drinking coffee dissolving metals -
Watch out for the dissolution of heavy metals when drinking coffee in metal cups
It is safe to drink clean water, and the safety of the cup is equally important. Yesterday, Feng Xiaoxia, a professor in the Department of Gastroenterology of the second affiliated Hospital of heavy Medical College, told Yousheng that the choice and use of cups are very knowledgeable, and it is easy to endanger your health if you are not careful. Customers do not know the material only look at the style yesterday, the reporter came to some supermarkets in our city to see that there are all kinds of cups of various materials, ceramics, glass, enamel, plastic, rust
2015-06-25 Metal cup drink coffee beware heavy metal dissolve drink water clean safe cup -
[hand brewing skill] the key factor affecting coffee brewing: temperature
![[hand brewing skill] the key factor affecting coffee brewing: temperature](https://world.gafei.com/uploads/allimg/190618/3-1Z61R03351Y3.jpg)
Professional coffee knowledge exchange more coffee bean information Please pay attention to the coffee workshop (Wechat official account cafe_style) in the brewing process, water and coffee will undergo some complex chemical reactions, and the water temperature will directly affect the extraction rate of different ingredients in the coffee during brewing. Water will extract quinic acid, amino acids and tannins, caffeine, oils and other substances from coffee.
2019-06-18 Hand punching skill influence coffee brewing key factor temperature -
Coffee brewing method: the historical origin and operation method of hand-made coffee
I like to make myself a cup of coffee at the beginning of the day, the beautiful melody of the bean grinder and the slow and graceful flow of the thin-mouth pot, as if gently opening the curtain of the day. Making coffee by hand allows you to quietly focus on such a wonderful thing. I like to collect my thoughts and adjust my mood in this quiet process. I feel as excited as waiting for the sunrise.
2015-12-02 Coffee brewing hand brewing history origin operation method -
Coffee brewing method hand brewing pot: an introduction to the history of hand brewing coffee and an analysis of its operation methods
I like to make myself a cup of coffee at the beginning of the day, the beautiful melody of the bean grinder and the slow and graceful flow of the thin-mouth pot, as if gently opening the curtain of the day. Making coffee by hand allows you to quietly focus on such a wonderful thing. I like to collect my thoughts and adjust my mood in this quiet process. I feel as excited as waiting for the sunrise.
2016-01-06 Coffee brewing way hand pot history origin introduction operation method -
What is the reason for the insufficient extraction of hand-brewed coffee? how to solve the root cause of the problem?
Professional coffee knowledge exchange more coffee bean information Please pay attention to the front street of coffee workshop (Wechat official account cafe_style)-A very important factor in the extraction failure of hand-brewed coffee is the mismatch between the grinding thickness of coffee and the extraction time and method. The grinding thickness of coffee can expose all of the coffee beans.
2021-12-31 Hand brewing coffee extraction deficiency what is it the cause how solve the problem root cause -
Will the action of slapping the filter cup also affect coffee extraction?
A coffee bean is made up of different flavor substances, such as sour, sweet, bitter, fragrant and so on, and their dissolution rates are different, some fast and some slow. If we want a pot of coffee to collect all these delicacies without showing too much negative taste, we will sum up our past brewing experience and make a good foundation.
2023-11-09 -
Six ways of coffee extraction introduce the extraction technology of coffee, grinding degree, brewing method.
Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) six ways of coffee extraction, hand-brewed coffee extraction, Italian coffee extraction and so on. Extraction plays the most important role in brewing a cup of coffee, whether it is hand-dripping filtration or Espress
2022-06-28 Coffee take 6 kinds way introduction hand brew extract Italian style -
Suggestions on how to make coffee without bitterness, shallow roasting, hand-made coffee parameters
"hand brewing" is the first choice for many coffee players. The core principle of hand brewing coffee is dissolution and extraction, which refers to the process in which the soluble substances in coffee are dissolved from solid to liquid. Many factors need to be taken into account in the process, such as the proportion of hand-brewed coffee, including the ratio of water to powder, fine grinding grains, water temperature, manipulation, etc.
2021-11-20 -
A good cup of coffee depends on how well you extract it, time allocation and operation process.
Professional coffee knowledge exchange More coffee bean information Please pay attention to coffee workshop (Weixin Official Accounts cafe_style) Extraction plays the most important role in brewing a cup of coffee. Whether it is hand infusion, Espresso concentration or any brewing method, it has a considerable relationship with extraction. Extraction is the key point of brewing a cup of coffee, and it is divided into several aspects. of technology
2018-05-11 cup good coffee watch you get how key time distribution operation -
To what extent will the thickness of coffee powder affect coffee brewing?
Professional coffee knowledge exchange more coffee bean information Please pay attention to the coffee workshop (Wechat official account cafe_style) extraction failure, a very important factor is the mismatch between the grinding thickness of coffee and the extraction time and method. The grinding thickness of coffee can expose all volatile aromatic substances in coffee beans. The grinding thickness will have a great effect on the extraction of your coffee.
2019-10-01 Coffee powder young and thick will affect coffee brewing how much degree influence -
The perfect extraction of hand-brewed coffee how to make a good cup of coffee
Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) the extraction of hand-brewed coffee many factors can be controlled by ourselves, but also because so many factors enable us to adjust to a variety of tastes, it may be too sour or bitter in the mouth of others, but it is extremely delicious in your mouth, so it may not necessarily be
2019-09-18 Hand brewing coffee perfection extraction how talent sort of a cup of professional coffee -
What is the principle of hand extraction? Is there any way to make coffee?
Professional coffee knowledge exchange more coffee bean information Please pay attention to the coffee workshop (Wechat official account cafe_style) what is the principle of hand extraction? Is there any way to make coffee? Extraction is the process of dissolving a substance in water. The principle of extraction is nothing more than the release of substances needed when coffee powder comes into contact with water. Steaming is to infiltrate all coffee powder and give the following formal extraction.
2018-06-22 Hand flush take principle what is it what technique brew coffee professional -
Hand flushing skills, cooking gold manning and 90 + candlelight steaming time is different?
Professional baristas please pay attention to the coffee workshop (Wechat official account cafe_style) extraction is the process of making the substance soluble in water. The principle of extraction is nothing more than the release of substances needed by coffee powder when it comes into contact with water. Steaming is to infiltrate all coffee powder and prepare for the following formal extraction. Hand brewing coffee is a simultaneous process of flavor extraction and filtration, and is poured into
2017-11-29 Hand punch skill cooking gold mane ninety candle steaming time different -
Principle of hand-impact extraction | extraction methods to distinguish different baking degrees
Professional baristas please pay attention to the coffee workshop (Wechat official account cafe_style) extraction is the process of making the substance soluble in water. The principle of extraction is nothing more than the release of substances needed by coffee powder when it comes into contact with water. Steaming is to infiltrate all coffee powder and prepare for the following formal extraction. Hand brewing coffee is a simultaneous process of flavor extraction and filtration, and is poured into
2017-11-29 Hand punching extraction principle difference baking degree method specialty coffee -
How to reduce the bitterness of Yega Xuefei? how to reduce the bitterness of Yega Xuefei?
Professional coffee knowledge exchange more coffee bean information Please follow the coffee workshop (Wechat official account cafe_style) in the coffee extraction theory, the dissolution of coffee juice in the third stage dissolves more bitterness and astringency. Therefore, in theory, the cooking time should not be too long (the complete time should not exceed 3 minutes). It is relatively difficult to pass the third stage of extraction. In fact, the third stage is also good.
2018-09-14 How to reduce hand flush Yega Sheffield bitter Chevy hair how to do recommend special -
What is the effect of water quality on coffee extraction? a brief Analysis of the effect of Hot Water quantity on Coffee extraction
Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) Qianjie coffee-share the effect of water temperature and water quantity on coffee extraction water quality, including total hardness, alkali hardness, pH value, water source and other major factors. Generally speaking, the water quality of coffee extraction mostly refers to the total hardness. This article will explain the relevant words with a statement as simple as possible.
2019-12-18 Water quality coffee taken influence what is it water quantity brief analysis specialty knowledge -
Principle of hand-brewing coffee freshness of coffee beans grindness brewing water temperature extraction time hand flushing
People who are just beginning to know hand-brewed coffee are often frightened by a dazzling array of utensils and precautions, and they don't know where to start with kettles and filter cups. In fact, no matter what brewing equipment is used, the extraction of coffee revolves around wetting, dissolving and releasing. This time in front of the street, let's talk about the principle of hand-brewing coffee. To brew coffee is to extract the molecules from coffee cells.
2020-08-20 Hand brewing coffee brewing principle coffee beans freshness grinding degree flushing water temperature extract -
Basic knowledge of hand-brewed coffee purpose of brewing and steaming of coffee by hand-flushing three-stage water injection extraction
Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) hand coffee steps? Are the details of water injection and steaming important? What's the modus operandi? The phenomenon of steaming: expanding into a hill when hot water is poured in, the gas in the coffee powder expands when heated. (coffee
2021-10-25 Hand flushing coffee steps water injection steaming details important what technique