Does Sauerkraut Need to Be Refrigerated

Tangy, crunchy, and packed with health benefits, sauerkraut has been a traditional food enjoyed for centuries. But does sauerkraut need to be refrigerated?

The answer depends on whether it’s pasteurized or raw, store-bought or homemade, and how it’s sealed. In this guide, we’ll cover expert-backed storage tips, shelf life breakdowns, signs of spoilage, and fun ways to use up extra sauerkraut.

What is Sauerkraut?

The word sauerkraut means “sour cabbage” in German. 

Sauerkraut is a condiment and ancient food traditionally made with finely shredded cabbage fermented with salt and water. The fermentation process transforms the raw cabbage into a probiotic-rich food that supports gut health and has a distinctive sour taste.

While this type of sauerkraut would be considered “raw,” most store‑bought sauerkraut isn’t truly fermented. It’s just cabbage preserved in vinegar brine.

Store‑bought Sauerkraut: What’s The Difference Between Raw vs. Pasteurized?

What type of sauerkraut you have will determine when to refrigerate your sauerkraut.

Pasteurized sauerkraut is what is common in most supermarkets. It’s sauerkraut made with a vinegar brine usually jarred or canned and found in the unrefrigerated section of the supermarket.

• Shelf Life (Unopened): 6–12 months in the pantry.
• After Opening: Refrigerate and consume within 1–2 months.

Pasteurization kills the live bacteria normally found in traditionally made sauerkraut, making it shelf‑stable until opened. It won’t offer probiotic benefits, but has a long shelf life and is convenient.

Raw, unpasteurized sauerkraut is found in refrigerated sections of the supermarket. Traditionally its made with fresh cabbage fermented with salt and water. It’s rich in gut-healthy probiotics and is considered a living food.

• Shelf Life (Unopened): This type of  sauerkraut must always be kept refrigerated, even before opening.
• After Opening: Lasts 4–6 months if kept cold and submerged in brine.
• Why: Raw sauerkraut is a “living food” with active probiotics. It’s healthier but also perishable.

Key Differences

• Pasteurized: Shelf‑stable, longer pantry life, no probiotics.
• Raw: Always refrigerated, shorter shelf life, probiotic benefits.
• Packaging: Store‑bought sauerkraut may come in cans, jars, or vacuum‑sealed bags. Canned versions are pasteurized; bagged/jarred. Refrigerated versions are usually raw.

Should you refrigerate sauerkraut? Here’s what the experts say:

If sauerkraut is sold on a shelf (not refrigerated), it’s pasteurized and safe to store unopened in the pantry.

If it’s sold cold, it’s raw and you need to keep it refrigerated at all times.

The USDA Food Safety and Inspection Service recommends refrigerating opened sauerkraut to slow bacterial growth and preserve quality.

Pasteurized sauerkraut in sealed jars can be stored at room temperature until opened, but raw sauerkraut should always be kept cold.

Raw, fermented sauerkraut is a living food. According to researchers from Penn State Extension, refrigeration is key to preventing spoilage and maintaining its probiotic benefits opened or unopened.

Sauerkraut Shelf Life Breakdown

Key Takeaway: You should always refrigerate raw sauerkraut, but pasteurized sauerkraut can sit in the pantry until opened.

Here ar Signs Your Sauerkraut Has Gone Bad

Even with proper storage, sauerkraut can spoil. Watch for these warning signs:

Discoloration: Brown, dry or dull sauerkraut suggests deterioration.

Off Odor: Sauerkraut should smell tangy, not rotten or sulfurous.

Slimy Texture: This indicates bacterial contamination.

Mold Growth: Mold gives mycotoxins,which are chemicals that can make you sick when ingested. Visible mold means you should probably throw it away. For tips, check our guide on how to know if your sauerkraut’s gone bad. 

Best Practices for Storing Sauerkraut

✅ Keep unopened pasteurized sauerkraut in a cool, dry pantry.
✅ Always keep raw sauerkraut refrigerated even before opening.
✅ Use clean utensils to avoid contamination.
✅ Seal tightly after each use.
✅ Avoid direct sunlight and fluctuating temperatures.

Fun Ways to Use Up Extra Sauerkraut

Sauerkraut isn’t just for hot dogs! Try these creative ideas:

Savory Dishes

• Reuben Sandwiches: Classic pairing with corned beef, Swiss cheese, and rye bread.
• Sauerkraut Pierogi: Stuff dumplings with sauerkraut and potatoes.
• German Sauerkraut Soup: A hearty winter dish with sausage and potatoes.

Unexpected Twists

• Sauerkraut Pancakes: Add tangy crunch to savory pancakes.
• Sauerkraut Pizza: Top with sauerkraut, sausage, and mozzarella.
• Sauerkraut Stir-Fry: Toss into veggie stir-fries for acidity and crunch.

Health Boosts

• Sauerkraut Smoothies: Blend a spoonful into green smoothies for probiotics.
• Sauerkraut Salad Mix: Toss with shredded carrots, apples, and a vinaigrette.
• Sauerkraut Dip: Combine with cream cheese and herbs for a tangy spread.

Final Verdict: Should You Refrigerate Sauerkraut?

Yes! You should always refrigerate sealed sauerkraut after opening.

Refrigerating your sauerkraut keeps it flavor and safe to eat.

If you bought your sauerkraut from an unrefrigerated section of the grocery store you can safely store it in your pantry cabinet until you’re ready to enjoy it. Then pop it in the fridge after its opened.

Be sure to always keep raw sauerkraut refrigerated, whether it’s opened or unopened. This helps preserve its probiotic benefits while keeping it fresh. It will go bad very quickly if left out at room temperature.

With proper storage and some creative recipes your sauerkraut will never go to waste.

Further Reading

Should Honey Be Refrigerated?

Should Mustard Be Refrigerated?

Does Molasses Go Bad?

Should Soy Sauce be Refrigerated?

Does Olive Oil Go Bad?