Top 8 Reasons Why (Ferment) Storage Matters

  1. StoragekrautOptimize probiotic potency
  2. Boost nutrient retention
  3. Reduce oxidation
  4. Maximize a digestive healing program (i.e., AIP or GAPS)
  5. Maintain flavor and texture
  6. Reduce pathogenic mold or off-flavors
  7. Long-term storage (Garlic and kraut can easily keep for a year or longer)
  8. Optimize fridge or cold storage space

Probiotics, vitamins, minerals and enzymes are all optimally preserved with minimum exposure to air.

This article is specific to storing ferments after the active fermentation stage is complete. If this sounds like a foreign language, I would suggest reading “Required Reading for the Ferments Section” in my book.

My 4-Step Approach to Ferment Storage

1. Container

Ideally, an airtight container (anaerobic) that allows the ferment to continue to release excess fermentation gases is optimal.

Choosing the best option is more critical for longer storage. For example, if you are taking a ferment along for lunch or a potluck, then a small Fido jar or even a mason jar is fine. But if you want take advantage of the 8 Reasons Why Storage Matters, then the Probiotic Jar is the better option. I’ve had kraut and garlic keep perfectly for well over a year in a Probiotic Jar.

Note: If you are focusing on a digestive healing protocol to recover from a compromised system, then special care choosing a container may be a vital component. In this situation, I would highly recommend sticking to the top two options, or the third (in the below list) in a pinch.

I’ve ranked this list from Optimal to O.K. based on my research and experience.

  • Probiotic Jar with airlock (Try the short airlock for easier fridge storage)
  • Probiotic Jar with stopper
  • Fido jar or other wire-bail jar
  • Glassware or jars with a tight-fitting lid*
    *These are not airtight but may be an option for travel or a day or so in the fridge)

2. Container Size

Choose a size where the airspace is minimized. As you use the ferment, I recommend moving the contents to a smaller jar to keep the airspace at 25% or less. Fermentation never stops, and the LAB (Lactic Acid Bacteria) are sensitive to air.

More Airspace = Less Lactic Acid Bacteria

Continue to decant the ferment to a smaller-sized container to minimize the head or airspace between the top of the ferment and the lid.

3. Light and Temperature

Lactic acid bacteria and enzymes thrive in darkness. Be considerate and give them privacy to multiply and do their jobs. The fridge light is not an issue unless you hang out with the door open. For basements or cellars, choose a spot away from direct light and simply wrap a dish towel around the jar (leaving the airlock to stick out).

Ferments are temperature sensitive. Your fridge is fine for cold storage but if you are choosing a basement or cellar, 32°F to 50°F is recommended.

4. Burping or Off-Gasing

Ferments are living foods and continue to produce CO2 and other fermentation gases in cold storage (albeit much slower then when actively fermenting).

  1. If you are using an airlock with water, then the jar is being burped for you. Remember to check the water level in the airlock for evaporation and refill as needed.
  2. If you are using the stopper, remove and quickly replace the stopper. Alternatively, if you find the stopper has popped off in the fridge, then you may have waited too long to burp the jar. But now you get to play a family favorite: “find the stopper in the fridge.”
  3. If you are using a regular Fido jar, then open and close the lid. The frequency of this will depend on the contents of the ferment and it somewhat difficult to predict. If you hear a swoosh sound or feel a release of pressure, then a burp was probably needed. This is why I generally default to using a short airlock in the fridge so I have one less thing to keep track of.

Really Useful Tips To Consider

  • Avoid containers made of plastic, air/light permeable materials and stainless steel.
  • Always use a clean utensil when serving from the jar. Double dipping can introduce icky and/or pathogenic bacteria.
  • Minimize the time your jar is out at room temperature before serving. I recommend serving the quantity to be eaten on a separate plate and returning the jar to the fridge.
  • If you have leftovers from serving, save this in a separate container.
  • Burp your jars if you are not using an airlock for cold storage.
  • Consider freezing if you are running low on fridge or cellar space. Freezing maintains approximately 90% of the LABs.
  • Transfer store-bought ferments to an anaerobic container when you get home.

 

 

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