What is Racking Wine: A Concise Guide to the Technique

What is racking wine?  Racking wine is a crucial step in the winemaking process that significantly impacts the final product’s quality and taste. It refers to the process of transferring wine from one vessel to another, such as from a tank to a barrel or even between barrels.

This technique serves various purposes and involves siphoning the clear wine away from the sediment, which consists of dead yeast cells, grape seeds, pulp, and other particulates that naturally accumulate during fermentation.

The primary purpose of racking wine is to remove sediment, ensuring a clearer and cleaner wine. Removing sediment influences the wine’s flavors, texture, and stability as it ages. Another reason to rack is to introduce a limited amount of oxygen into the wine, which can help improve the overall taste and balance.

Racking is typically done multiple times throughout the winemaking process, with the first racking usually occurring after the initial fermentation of sugar to alcohol.

As you engage in racking wine, it’s essential to consider how often it should be done, the equipment used, and the technique required to yield the best results. Each racking stage uniquely contributes to defining your wine’s quality, character, and shelf life.

What Is Racking Wine?

Racking wine is the process of transferring wine from one vessel to another, such as from a tank to a barrel or barrel to barrel. This procedure is an essential step in the winemaking process and serves multiple purposes depending on the stage of fermentation.

Importance in Winemaking

Removing Sediment: One of the primary reasons why winemakers rack their wines is to remove sediment. During fermentation, particles like grape solids, dead yeast cells, and other impurities can accumulate at the bottom of the wine container. You can leave this sediment behind by racking the wine carefully, resulting in a clearer and more refined product.

Aeration: Racking also introduces a small amount of oxygen to the wine, which can help improve its flavor and stability. The aeration facilitates the development of desirable flavors, softens harsh tannins, and aids in maturation.

Avoiding Off-Flavors: Regular racking can help prevent the formation of off-flavors in the wine. If the wine is left in contact with the sediment (lees) for an extended period, it can cause the development of undesirable flavors and aromas.

When racking your wine, make sure to:

– Place the wine on a raised surface, allowing gravity to assist in the transfer process.

– Use appropriate equipment such as a gravity-fed or pump-driven racking system.

– Be mindful of the different stages of fermentation and when it is ideal to rack.

Understanding the fundamentals of racking wine can ensure a better outcome in your winemaking endeavors. Remember, the key objectives behind racking are to remove sediment, introduce aeration when needed, and prevent off-flavor development.

How to Rack Wine

First Racking

During the racking process, you will first need to transfer your wine from its initial fermentation vessel to another container. This is known as the first racking, and it serves to remove sediment and dead yeast cells, also known as gross lees. For fresh grape winemakers, this initial process helps separate the juice from the grapes and let the unwanted particulates settle at the bottom.

Subsequent Rackings

In some cases, a second racking may be required for bigger red wines like a Cabernet Sauvignon. This helps further clarify the wine by removing fine lees, which are the particles left after the first racking. Subsequent rackings will continue to improve the clarity and quality of the wine, ensuring that you end up with a clean and polished finished product.

During the wine racking process, minimizing the wine’s exposure to oxygen is crucial to prevent oxidation. Make sure to handle the wine gently and avoid splashing or vigorous agitation.

Racking Equipment

To properly rack your wine, you’ll need some specific equipment, such as:

– Pump or Gravity: You can choose between using a pump or gravity for the racking process. A pump will provide more control over the flow of wine, while relying on gravity is a gentler approach and requires less equipment.

– Hose: You will need a food-grade hose for transferring the wine from one vessel to another. The length and diameter of the hose will depend on the size of your containers and the distance between them.

Racking cane: This is a rigid, curved plastic or stainless steel tube that is inserted into the wine, helping to keep the hose submerged and avoid splashing.

By carefully following the racking process and using the appropriate equipment, you will ensure a clear, quality wine that is free of unnecessary sediment and unwanted flavors. Make sure to monitor your wine’s clarity throughout the racking process and adjust your methods as needed.

Techniques and Equipment


In the process of racking wine, siphoning is one of the traditional methods used to transfer wine from one vessel to another. You will need a racking hose and a siphon tube (or a racking cane) to perform this technique.

First, ensure that the container with the wine is on a raised surface, significantly higher than the other container. Insert the siphon tube into the wine, but avoid touching the sediment at the bottom.

Then, gently suck on the other end of the tube to create a flow. Once the wine starts flowing, place the tube’s end into the receiving container to complete the transfer.

Using Inert Gas

Another method for racking wine is by using an inert gas, such as argon, to push the wine from one vessel to another gently. This technique helps minimize the wine’s contact with oxygen and reduces the risk of oxidation.

To use this method, connect a hose from an argon tank to a fitting in the first vessel. Ensure the receiving container is either sealed or has a hose running from it to a bucket filled with water to act as an airlock. Slowly open the valve on the argon tank, allowing the gas to push the wine into the receiving vessel gently.

Wine Transfer Pump

A wine transfer pump is an efficient and more controlled way of racking wine. These pumps are designed specifically for wine transfer and come in a variety of types, such as diaphragm pumps, impeller pumps, and peristaltic pumps.

To use a wine transfer pump, attach the inlet hose from the pump to the vessel containing wine and the outlet hose to the receiving container. Turn on the pump, adjusting the flow rate as needed, and carefully transfer the wine. This method allows for a more controlled transfer and ensures minimal disturbance of the sediment at the bottom of the containers.

Remember to always use proper sanitation practices with all the equipment used in the racking process. By using these techniques and properly handling your equipment, you can achieve a successful racking, resulting in clearer and better-tasting wine.

Aging and Racking

Bulk Aging

Bulk aging is an important step in the winemaking process where your wine is allowed to age and develop flavor complexity and smoothness. The wine should be stored in an appropriate aging vessel, such as stainless steel, glass, or oak barrels during this time. It’s essential to periodically rack the wine to keep it from the sediment (pulp and solids) that naturally accumulates, ensuring its clarity and stability.

Barrel to Barrel

Barrel to barrel racking is a method that winemakers use to transfer aged wine from one oak barrel to another while removing sediment. This process helps achieve both aeration and clarification in the wine.

By using appropriate siphoning techniques and equipment, you can carefully transfer the wine from one barrel to another, leaving the sediment behind in the original barrel. This racking process can occur multiple times during the aging period, depending upon the winemaker’s preferences and desired progress of wine maturation.

Tank to Barrel

In the tank to barrel racking, the wine is transferred from a stainless steel or fermentation tank to an oak barrel. This method is an essential step in the aging process, especially for red wines, since it imparts distinct flavors and beneficial oxidative effects to the wine.

Upon racking, the liquid is carefully pumped from the tank to the barrel, with the aim of minimizing any pulp or solids in the transfer. This process separates the wine from any residual yeast cells and particles that settle to the bottom of the tank, ensuring a more refined final product.

Barrel to Tank

In the late stages of the aging process, the wine may need to be transferred back from the barrel to a tank. This barrel to tank racking method aims to remove the wine from any remaining sediment and to stop the maturation process if the desired flavor profile has been achieved.

This step also provides the opportunity to blend different batches of wine before bottling, in order to create a consistent and balanced final product.

Additional Considerations

Taste and Aromas

When racking your wine, it’s important to consider the impact on taste and aromas. Racking allows for the development of more complex flavors and the release of unwanted compounds. This process reduces off-flavors and helps incorporate fresh fruit characteristics into the wine, resulting in a more enjoyable flavor profile.


Racking also aids in the clarification of your wine. Transferring the wine from one vessel to another leaves you behind sediments, or lees, which can cloud the wine and affect its taste.

This is particularly important if you’re making wine from fresh grapes or using a kit. Careful racking helps to produce a crystal-clear final product without the need for excessive fining agents.

Preventing Off-Flavors

To prevent off-flavors, it’s essential to rack your wine diligently. Lees, composed of dead yeast cells and other particulates, can contribute to off-flavors or “mousy” aromas if left in contact with the wine for too long. Racking at appropriate intervals helps separate the wine from these undesirable elements, resulting in a cleaner and more enjoyable taste.


Finally, racking provides an opportunity for blending. By carefully transferring your wine into a new vessel, you can blend it with another wine to create a unique combination of flavors and aromas, enhancing the final product. Whether you’re blending wines made from different varietals or using stainless steel tanks to introduce specific characteristics, racking provides the control needed for successful blending operations.

Common Racking Vessels


A carboy is a glass or plastic container commonly used in winemaking for racking purposes; it is also referred to as a demijohn. They often come in sizes ranging from 3 to 6 gallons. Remember to attach an airlock to allow gases to escape without letting oxygen in when using a carboy. Gently siphon your wine from one carboy to another for each racking stage, leaving sediment behind.

Primary Fermenter

The primary fermenter is where you begin the fermentation process. Typically, it’s a large food-grade bucket or bin with a capacity of several gallons. You will add your crushed grapes, yeast, and other ingredients here to start fermentation. After fermentation begins, you may transfer the wine to a secondary fermenter, leaving sediment (called gross lees) behind.

Secondary Fermenter

The secondary fermenter is often a carboy or another primary fermenter. The purpose of this stage is to allow the fermentation process to continue while minimizing contact with oxygen. It’s essential to keep an airlock on the secondary fermenter so that carbon dioxide can escape while preventing oxygen exposure. You’ll typically rack your wine into this vessel after the primary fermentation is complete.

Bulk Aging Vessel

A bulk aging vessel is used to age your wine for an extended period after the fermentation process is complete. This container can be a large carboy, barrel, or another suitable vessel. Here, your wine can undergo further clarification and develop its flavors over time. You may rack your wine in and out of these vessels to achieve desired aging conditions or to introduce oak flavors where necessary.

Remember to select the appropriate vessels for your racking process carefully. The cleanliness of these containers is critical to the success of your winemaking journey.

P.S. We have a small thank you gift for you for stopping by. Find out more on the blog side or at the bottom if you’re using a mobile. Cheers!

Leave a Comment

Share via
Copy link
Powered by Social Snap