How Long Does Sauerkraut Last?




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Sauerkraut is a traditional dish made from fermented cabbage that has been enjoyed for centuries. It is a popular ingredient in many dishes and is also known for its health benefits. However, like any other food, it can spoil over time. In this article, we will discuss how long sauerkraut lasts, the factors that affect its shelf life, and how to store it properly.

How is Sauerkraut Made?

Sauerkraut is a fermented food that has been enjoyed for centuries. It is made from finely shredded cabbage that is fermented by lactic acid bacteria. The fermentation process not only preserves the cabbage but also creates a tangy, sour flavor and a crunchy texture.

The process of making sauerkraut starts with selecting fresh and healthy cabbage. The cabbage is then washed and finely shredded using a mandoline or a knife. It is important to remove the outer leaves and any damaged parts of the cabbage before shredding.

Once the cabbage is shredded, it is mixed with salt. The salt helps to draw out the natural moisture from the cabbage, creating an environment that is ideal for fermentation. The amount of salt used can vary depending on personal preference and the recipe being used.

After mixing the cabbage and salt, it is then packed tightly into a fermentation vessel such as a crock or a jar. It is important to pack the cabbage tightly to eliminate any air pockets that may hinder the fermentation process. Some recipes also call for the addition of spices or other vegetables such as carrots or onions.

Once the cabbage is packed into the fermentation vessel, it is then covered with a weight such as a plate or a plastic bag filled with water. The weight helps to keep the cabbage submerged in its own liquid, which is crucial for the fermentation process to occur.

The fermentation process usually takes several days to several weeks, depending on the temperature and the amount of salt used. During this time, lactic acid bacteria naturally present on the cabbage multiply and convert the natural sugars in the cabbage into lactic acid. This process creates the sour flavor and preserves the cabbage.

It is important to check the sauerkraut regularly during the fermentation process to ensure that it is not spoiling. If you notice any signs of spoilage such as a foul odor or mold, it is best to discard the sauerkraut.

Once the fermentation process is complete, the sauerkraut can be stored in the refrigerator or canned for longer storage. It can be enjoyed on its own or used as a condiment in a variety of dishes.

What is the Shelf Life of Sauerkraut?

Sauerkraut is a fermented food that can last for a long time if stored properly. The shelf life of sauerkraut depends on several factors, such as the method of preparation, storage conditions, and the presence of preservatives. On average, sauerkraut can last from 1 to 6 months in the refrigerator.

Factors that Affect the Shelf Life of Sauerkraut

Several factors can affect the shelf life of sauerkraut. Here are some of the most important ones:

Method of Preparation

The shelf life of sauerkraut depends on how it was prepared. If sauerkraut is made with vinegar or other preservatives, it can last longer than traditional homemade sauerkraut.

Storage Conditions

Sauerkraut should be stored in airtight containers in the refrigerator to prevent contamination. Exposure to air and moisture can lead to spoilage.

Presence of Preservatives

Commercially-made sauerkraut may contain preservatives that can extend its shelf life.


Sauerkraut should be stored at a temperature between 32-40°F (0-4°C) to slow down the fermentation process and prevent spoilage.

Signs of Spoiled Sauerkraut

It is important to be able to recognize the signs of spoiled sauerkraut to avoid food poisoning. Here are some signs that sauerkraut has gone bad:

  • Foul smell
  • Mold growth
  • Slimy texture
  • Discoloration
  • Off taste

If sauerkraut shows any of these signs, it should be discarded immediately.

How to Store Sauerkraut Properly

Sauerkraut should be stored in airtight containers in the refrigerator to prevent contamination. If you have homemade sauerkraut, store it in glass jars or ceramic crocks with lids. To extend its shelf life, you can also store it in the freezer.

Freezing Sauerkraut

Sauerkraut can be frozen for up to 8 months if stored properly. To freeze sauerkraut, place it in airtight containers or freezer bags and remove as much air as possible before sealing. Thaw sauerkraut in the refrigerator before

Reusing Leftover Sauerkraut

If you have leftover sauerkraut, there are many ways to incorporate it into your meals. Here are some ideas:

  • Add it to sandwiches or wraps for extra flavor and crunch.
  • Use it as a topping for hot dogs or sausages.
  • Mix it into salads or coleslaws for a tangy twist.
  • Use it as a pizza topping for a unique flavor.
  • Add it to soups or stews for added depth of flavor.

Recipes to Use Leftover Sauerkraut

If you want to get creative with your leftover sauerkraut, here are some recipes to try:

1. Reuben Sandwich

  • 2 slices of rye bread
  • 2-3 oz of corned beef
  • 1/4 cup of sauerkraut
  • 2 slices of Swiss cheese
  • Thousand Island dressing


  1. Toast the rye bread slices.
  2. Layer the corned beef, sauerkraut, and Swiss cheese on one slice of the bread.
  3. Spread Thousand Island dressing on the other slice of bread.
  4. Combine the two slices of bread and grill until the cheese is melted.

2. Sauerkraut Soup

  • 1/2 cup of sauerkraut
  • 1/2 cup of diced potatoes
  • 1/2 cup of diced carrots
  • 1/2 cup of diced onions
  • 1/2 cup of diced celery
  • 4 cups of chicken broth
  • 1/2 cup of sour cream
  • Salt and pepper to taste


  1. In a large pot, sauté the onions and celery until they are translucent.
  2. Add the potatoes, carrots, and chicken broth to the pot and bring to a boil.
  3. Reduce heat and let simmer for 20-25 minutes or until the vegetables are tender.
  4. Add the sauerkraut and simmer for an additional 10-15 minutes.
  5. Season with salt and pepper to taste.
  6. Serve with a dollop of sour cream.

Health Benefits of Sauerkraut

Sauerkraut is not only delicious but also packed with health benefits. Here are some of the most important ones:

  • Rich in probiotics: The fermentation process in sauerkraut creates beneficial bacteria that can promote gut health and boost immunity.
  • Lowers cholesterol: Sauerkraut contains fiber that can help lower cholesterol levels.
  • High in vitamin C: Sauerkraut is a great source of vitamin C, which is essential for a healthy immune system.
  • Anti-inflammatory: The lactic acid in sauerkraut can help reduce inflammation in the body.


1. Is it safe to eat sauerkraut that has gone bad?

No, it is not safe to eat sauerkraut that has gone bad. Discard it immediately if it shows any signs of spoilage.

2. How long does homemade sauerkraut last?

Homemade sauerkraut can last up to 6 months if stored properly in the refrigerator.

3. Can I freeze sauerkraut?

Yes, sauerkraut can be frozen for up a few months. However, freezing may affect the texture and flavor of the sauerkraut.

4. Can I can sauerkraut for longer storage?

Yes, sauerkraut can be canned for longer storage. However, it is important to follow proper canning procedures to ensure safety and avoid the risk of botulism.

5. What are some signs that sauerkraut has gone bad?

Some signs that sauerkraut has gone bad include a foul odor, slimy texture, or a change in color or taste. If you notice any of these signs, it is best to discard the sauerkraut.


Sauerkraut is a tasty and healthy dish that can last for months if stored properly. Its shelf life depends on various factors, including the method of preparation, storage conditions, and presence of preservatives. To enjoy its many benefits, it is important to store sauerkraut in airtight containers in the refrigerator and look out for signs of spoilage.

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