Tea lovers who love tea almost all love purple sand pots. A good purple sand pot can truly reflect the characteristics of "neither taking the incense nor cooking the soup".
The standards for judging the quality of purple sand pots vary widely, and the most common criterion is to judge the merits of purple sand pots according to the six elements of "mud, shape, work, style, work, and name".
Many friends who have just come into contact with purple sand pots are immediately confused when they see these, I just want to buy a pot to make tea, but I didn't think there were so many doorways, and I didn't know how to start at once!
Don't be afraid, from today on, Xiaoyi will start from the basics for everyone and introduce the relevant knowledge about the purple sand pot one by one.
Today we will start from the raw material of the purple sand pot - "mud"!
"Mud" is used as a raw material for making purple sand pots, which is mainly divided into three kinds: purple mud, red mud and green mud, which is the most prestigious produced in Yixing, Jiangsu. The high-quality purple sand mud contains high-content iron oxide, which can maintain the original taste of the tea soup, facilitate the leaching of nutrients in the tea leaves, and has the characteristics of cold resistance and heat resistance.
<h1 class="pgc-h-arrow-right" data-track="279" > purple mud</h1>
Purple mud is a sandwich of the laminate ore layer, and the ore body is in the shape of a thin layer of lens. The color of the raw ore is purple and purple-red with light green spots; after firing, the appearance color is purple, purple-brown and purple-black.
▲Purple mud raw ore
The main component of purple mud is water mica, and contains an unequal amount of kaolin, quartz, mica chips and iron, etc., the mud has high strength, good stability, easy to control; tight and strong, easy to form, can be made of large products.
The pot is made of purple clay, and the color is red, and it looks like red mud after soaking. The pot has good breathability, high rate of hot shower discoloration, pro-tea, easy to grow. Suitable for brewing light roasted fire series of oolong tea and Pu'er raw tea.
▲Purple clay is fired
ps: The purple sand pot photos used in today's article are small to understand the recent preferred products, interested friends can chat privately ~
There are many side types of purple mud, there are "bottom groove green mud", which is purple or dark brown after burning; there is "clear cement", which is moist red after burning; there is "pear skin purple mud", which is frozen pear color after burning; ...
<h1 class="pgc-h-arrow-right" data-track="278" > red clay</h1>
Red mud is also one of the main mud species of purple sand mud, which can be divided into vermilion mud, small red mud and big red robe mud, and the difference is the difference between the original ore layer and the degree of weathering, refining and blending.
▲Red mud raw ore
Ming Zhou Gaoqi's "Yang Envy Tea Pot System" once recorded: the stone bone that did not touch the wind and the day, and the tao was changed to cinnabar. What is recorded here is the Red Clay Mine, which is composed of Erieite, Kaolinite, Iron Oxide, Quartz and Muscovite.
Due to the amount of iron content, the color of the red mud ore after firing is slightly yellow in red, or slightly red in yellow, or slightly purple in red, which can be a base color such as cinnabar, cinnabar purple or begonia red, and the vermilion is orange in the vermilion, and the color is bright but not demon. The presentation of color is closely related to the temperature of the paper burning, and the longer it is used, the more calm it appears.
▲Clay is fired
Red but not colorful, red is soft, is the characteristic of red clay color. The color of the red color is too bright, and most of them are iron red pink added to the mud.
The kiln temperature is insufficient, the red mud is dry yellowish orange, and the water color is not prominent. If the kiln temperature is slightly higher, the contraction is large, the deformation, the collapse, and the iron melt point are more likely to occur. The kiln is warm and burned, smooth and bright, with a slight orange in the red.
<h1 class="pgc-h-arrow-right" data-track="277" what is the difference between vermilion mud and red clay >? </h1>
In the color of the original mine, the vermilion mud is bright yellow and has a greasy feeling; the red clay is yellow and drier.
In the color of firing, the vermilion mud is bright red, and the surface is occasionally corrugated; the red mud is dark red, and there is no ripple wrinkle on the surface.
In the percussion sound, the vermilion mud sintering degree is high, and the sound scream has a metallic feeling; the red mud sintering degree is low, and the sound is calm and clay.
In terms of production difficulty, vermilion clay is highly malleable, easy to form but difficult to burn, large shrinkage rate, low yield rate; red clay is weak plasticity, difficult to form but easy to burn, shrinkage rate is small, high yield.
<h1 class="pgc-h-arrow-right" data-track="276" > green clay</h1>
Green mud, mainly produced in Yixing Dingshu Huanglong Mountain, commonly known as "Benshan green mud". The raw ore is pale green, and after firing, it may be beige (low temperature), or brownish yellow (suitable temperature), or bronze (high temperature).
▲Green clay raw ore
The biggest difference between green mud and red mud and purple mud is that the content of iron in the ore is very small, and it exists in the state of iron ions, so the ore is green. The titanium content of green mud is high, so it is milky yellow after sintering. Adding chemically synthesized titanium oxides (titanium dioxide) to white clay clay is a common method of making counterfeit green clay.
▲Green clay is fired
Due to the small number, large pieces of green clay products are not easy to fire, so green mud more to make small products, add the right amount of color agent, can be changed into a variety of decorative mud, mostly as makeup clay whitewash on the surface of the purple mud body.
<h1 class="pgc-h-arrow-right" data-track="275" > mud</h1>
"Tuan" is the abbreviation of "Tuan shan", Tuan Shan is Huanglong Mountain. "Tuanshan mud" originally means a natural mine mined from Tuanshan that mixes and symbiosis of purple mud and green mud. Later generations emphasized mixing, symbiosis, and "tuan" together, which was referred to as "tuan mud".
▲Lump mud ore
The mud ore is green, but after sintering it is cyan, brown, brown and brownish-red. If the purple mud component is too much, the color is red when it is not burned, and the color is green and gray after firing; if the green clay component is more, the color is yellow when it is not burned, and the color is grayish and white after firing.
The pot made of mud is fired at a kiln temperature of about 1150 ° C, and the firing shrinkage ratio is about 13%. Suitable for brewing light roasted fire series of teas, such as oolong tea.
<h1 class="pgc-h-arrow-right" Data-track="274" What is the difference between > mud and mud? </h1>
In the Yixing dialect, "tuan" and "duan" are homophonous, so many tea lovers mistakenly believe that the different nature of tuan mud and duan mud are the same kind of mud.
Tuan mud is made of natural benshan green mud and purple mud symbiotic raw ore grinding, commonly known as "ore material". The particle structure is characterized by a strong sense of sand, the so-called "more bone and less meat", and the surface of the pot after firing is rich in texture and moisturizing after use.
▲Section mud is burned
Duan mud is the mined purple mud mine and The Benshan green mud mine are grinded separately, and artificially blended the day after tomorrow, commonly known as "mud material". The characteristics of the granular structure are strong sense of mud, the so-called "less bone and more meat", the texture of the pot surface after firing is monotonous, there is no sense of moisture after use, and it is easy to "spit black".
After the inferior section of mud is burned, or the color is dark and obscure, or it is particularly gorgeous but not sandy,
<h1 class="pgc-h-arrow-right" data-track="259" >how to tell if the purple sand mud is pure? </h1>
Some people say, "Take a match and draw it on the pot, and the one that can draw the fire is real purple sand, otherwise it is fake." "In fact, this is not a reliable way to identify purple sand. Matches are made of red phosphorus, which has a low ignition point and only needs to be rubbed lightly to burn, and rubbing on clothing will also be ignited.
In fact, it can be very simple to identify whether the purple sand mud is pure
1, look at the color, pure purple sand color, should have a jade-like charm, whether it is purple, yellow, or red, its light quality is like oil, the more rub the more moist.
2. Listen to the sound, put the tea leaves in the purple sand pot, and then pour boiling water. Because of its good breathability, the purple sand pot will make a sandy, dumb and heavy sound. If the sound of metal or porcelain crunching is emitted when water is injected into the pot, it can be concluded that it is not purple sand or mud impurity.
3, smell, mixed with chemical raw materials of the pot has a peculiar smell. With Tieguanyin tea into the pot, after brewing for an hour, the tea changes color or has a peculiar smell, it is false purple sand.
4, touch, purple sand feels smooth, comfortable, natural, although there are particles but still very round. The texture of sand powder milled by traditional hand processing is also different.
Today's knowledge about the purple sand pot "mud" will be introduced here first, and later we will introduce more knowledge about the purple sand pot for everyone, if you have what you want to know, welcome to leave a message in the comment area to tell xiao understand, xiao understand will be in the follow-up article for everyone to answer one by one.