Wort filtration: a key step in brewing pure beer and the importance of the lauter tun
- Jan 23, 2025
- 168
- tiantai
After mashing, the mash must be separated from solid and liquid as soon as possible, that is the process of separating the wort and grains, this process of beer brewing which is done in the lauter tun is called lautering. Lautering is a important part of the wonderful process of brewing. It not only determines the clarity and taste of the beer, but also directly affects the subsequent fermentation and the quality of the finished beer. Today, we take a closer look at this process and the indispensable role that the lauter tun plays in it.
During mashing, the starch in the malt is converted into substances such as fermentable sugars and non-fermentable dextrin, which are mixed with water to form the wort. However, the wort also contains a large number of grains particles and other impurities, if not removed, can have a serious impact on the quality of the beer.
First of all, unfiltered wort can make the beer cloudy, affecting its appearance. Consumers often prefer a clear and transparent beer, while a cloudy beer can give a feeling of unhygienic or poor quality.
Secondly, impurities in the wort can affect the mouthfeel and flavor of the beer. For example, grains may bring a bitter taste, and protein coagulates may make the beer sticky, affecting the freshness of the mouthfeel. In addition, impurities can affect the stability of the beer, causing it to settle or deteriorate during storage. Wort lautering is therefore an essential step in the beer brewing process. Through effective lautering, impurities in the wort can be removed, making the beer clearer and more authentic, while also improving the stability and shelf life of the beer.
I.Methods of wort lautering
At present, there are two commonly used wort filtration methods in beer brewing: lauter tank method and filter press method.
1.Lauter tank method is the traditional lautering method, a lauter tank usually consists of a container with a false bottom and a layer of filter media(grains).The wort passes through the spent grains under gravity and pressure, where the grains particles and impurities are left on the filter media, while the clear wort flows through the sieve into the collection container. Most breweries in our country use the lauter tank method for filtration. The advantages of the lauter tank method are that it is simple to operate, low cost, and easy to control.
2.The filter press method uses a filter press for lautering. The filter press consists of a plurality of filter plates and filter frames, and a filter medium is sandwiched between the filter plates and the filter frame. The wort passes through the filter medium under pressure, the grains particles and impurities are left between the filter plate and the filter frame, while the clear wort flows into the collection vessel through the outlet hole in the filter plate.
The advantages of the filter press filtration method are high filtration efficiency and short filtration time, which is suitable for large breweries. However, this method has a high equipment cost, complex operation, and requires professional technicians to operate and maintain.
II.What is first wort and second wort
The wort lautering process can be divided into two stages, the first stage is to separate the wort from the mash using the grains as a filter layer,This part of the wort is called the first wort. This part of the wort contains more fermentable sugars, nutrients and flavor substances, and its concentration is usually relatively high, because it is the first to be separated, with relatively few impurities and better quality.
The other part is the second wort, the second wort is the wort obtained by adding hot water (generally called sparge water) to the lauter tun containing the remaining wort again after obtaining the first wort, and the wort is washed and soaked to make the remaining fermentable sugars and flavor substances in the wort further dissolved, and then filtered again, so the second wort is also often called "sparge wort". This process is like a "secondary scoop" of the spent grains, extracting as many useful ingredients as possible that can still be used, so that the raw materials can be used more fully and waste is reduced.
III.The role of the lauter tun in wort lautering
Regardless of the lautering method, the lauter tun is one of the indispensable pieces of equipment in the beer brewing process. The lauter tun is usually made of stainless steel, which has the characteristics of corrosion resistance, high temperature resistance, pressure resistance, etc. Its main function is to collect and store the filtered wort, which can also be further processed and adjusted.
1.Collect and store wort
2.Further processing and adjustment of the wort
The lauter tank can also be used for further processing and adjustment of the wort. For example, substances such as yeast nutrients, antioxidants, etc., can be added to the lauter tank to improve the activity of yeast and the stability of beer. In addition, parameters such as the pH value and sugar content of the wort can be adjusted in the lauter tank to meet the requirements of different beer varieties.
3.Improve filtration efficiency and quality
The design and construction of the lauter tank can also influence the efficiency and quality of wort lautering. For example, the lauter tank can be equipped with a stirring device to stir the wort to prevent the precipitation of impurities in the wort and improve lautering efficiency.
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Wort lautering is a crucial step in the beer brewing process and has a direct impact on the quality and taste of the beer. As an important piece of equipment in the wort lautering process, the lauter tank plays an important role in collecting and storing the wort, further processing and adjusting the wort, and improving the efficiency and quality of the filtration. In the beer brewing process, we should choose the appropriate filtration method and lauter tank according to different production needs and process requirements to ensure the effect of wort filtration and the quality of beer. At the same time, we should continue to explore and innovate to improve the technical level of wort lautering and provide consumers with better beer products.
Friends, If you want to expand, build a new brewery or you need lauter tanks, please feel free to contact Tiantai Amanda!
Edited by Amanda
Sales manager in Tiantai Brewtech
Email: [email protected]
During mashing, the starch in the malt is converted into substances such as fermentable sugars and non-fermentable dextrin, which are mixed with water to form the wort. However, the wort also contains a large number of grains particles and other impurities, if not removed, can have a serious impact on the quality of the beer.
First of all, unfiltered wort can make the beer cloudy, affecting its appearance. Consumers often prefer a clear and transparent beer, while a cloudy beer can give a feeling of unhygienic or poor quality.
Secondly, impurities in the wort can affect the mouthfeel and flavor of the beer. For example, grains may bring a bitter taste, and protein coagulates may make the beer sticky, affecting the freshness of the mouthfeel. In addition, impurities can affect the stability of the beer, causing it to settle or deteriorate during storage. Wort lautering is therefore an essential step in the beer brewing process. Through effective lautering, impurities in the wort can be removed, making the beer clearer and more authentic, while also improving the stability and shelf life of the beer.
I.Methods of wort lautering
At present, there are two commonly used wort filtration methods in beer brewing: lauter tank method and filter press method.
1.Lauter tank method is the traditional lautering method, a lauter tank usually consists of a container with a false bottom and a layer of filter media(grains).The wort passes through the spent grains under gravity and pressure, where the grains particles and impurities are left on the filter media, while the clear wort flows through the sieve into the collection container. Most breweries in our country use the lauter tank method for filtration. The advantages of the lauter tank method are that it is simple to operate, low cost, and easy to control.
2.The filter press method uses a filter press for lautering. The filter press consists of a plurality of filter plates and filter frames, and a filter medium is sandwiched between the filter plates and the filter frame. The wort passes through the filter medium under pressure, the grains particles and impurities are left between the filter plate and the filter frame, while the clear wort flows into the collection vessel through the outlet hole in the filter plate.
The advantages of the filter press filtration method are high filtration efficiency and short filtration time, which is suitable for large breweries. However, this method has a high equipment cost, complex operation, and requires professional technicians to operate and maintain.
II.What is first wort and second wort
The wort lautering process can be divided into two stages, the first stage is to separate the wort from the mash using the grains as a filter layer,This part of the wort is called the first wort. This part of the wort contains more fermentable sugars, nutrients and flavor substances, and its concentration is usually relatively high, because it is the first to be separated, with relatively few impurities and better quality.
The other part is the second wort, the second wort is the wort obtained by adding hot water (generally called sparge water) to the lauter tun containing the remaining wort again after obtaining the first wort, and the wort is washed and soaked to make the remaining fermentable sugars and flavor substances in the wort further dissolved, and then filtered again, so the second wort is also often called "sparge wort". This process is like a "secondary scoop" of the spent grains, extracting as many useful ingredients as possible that can still be used, so that the raw materials can be used more fully and waste is reduced.
III.The role of the lauter tun in wort lautering
Regardless of the lautering method, the lauter tun is one of the indispensable pieces of equipment in the beer brewing process. The lauter tun is usually made of stainless steel, which has the characteristics of corrosion resistance, high temperature resistance, pressure resistance, etc. Its main function is to collect and store the filtered wort, which can also be further processed and adjusted.
1.Collect and store wort
2.Further processing and adjustment of the wort
The lauter tank can also be used for further processing and adjustment of the wort. For example, substances such as yeast nutrients, antioxidants, etc., can be added to the lauter tank to improve the activity of yeast and the stability of beer. In addition, parameters such as the pH value and sugar content of the wort can be adjusted in the lauter tank to meet the requirements of different beer varieties.
3.Improve filtration efficiency and quality
The design and construction of the lauter tank can also influence the efficiency and quality of wort lautering. For example, the lauter tank can be equipped with a stirring device to stir the wort to prevent the precipitation of impurities in the wort and improve lautering efficiency.
Wort lautering is a crucial step in the beer brewing process and has a direct impact on the quality and taste of the beer. As an important piece of equipment in the wort lautering process, the lauter tank plays an important role in collecting and storing the wort, further processing and adjusting the wort, and improving the efficiency and quality of the filtration. In the beer brewing process, we should choose the appropriate filtration method and lauter tank according to different production needs and process requirements to ensure the effect of wort filtration and the quality of beer. At the same time, we should continue to explore and innovate to improve the technical level of wort lautering and provide consumers with better beer products.
Friends, If you want to expand, build a new brewery or you need lauter tanks, please feel free to contact Tiantai Amanda!
Edited by Amanda
Sales manager in Tiantai Brewtech
Email: [email protected]
