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You've finally done it! You’ve successfully brewed your first batch of water kefir, and you can’t wait to share this delicious drink with your friends and family. But the question arises: ‘How do you store this precious brew?’ Reaching for a convenient plastic container seems like the obvious choice, but is it the right one?
This blog will explore whether water kefir can be stored in plastic containers and present the best alternative. It will also explore unique storage tips to preserve the kefir's flavour and integrity, ensuring the brew stays as delightful as the first sip!
What is water kefir?
Water kefir is a refreshing, probiotic-rich beverage created through a fascinating fermentation process. At the heart of this process lies water kefir grains—these aren't grains in the traditional sense but rather a symbiotic culture of bacteria and yeast (SCOBY). This unique culture looks like small, gelatinous granules that resemble little cauliflower florets.
The fermentation begins when you introduce water kefir grains to a sugary liquid, such as sugar water, juice, or coconut water. The microorganisms in the grains feed on the sugar, metabolising it and producing lactic acid, acetic acid, ethanol, and carbon dioxide. This process gives water kefir its tangy flavour and effervescent bubbles.
The medium you choose for fermentation significantly influences the beverage's final taste and aroma. For example, adding juice during a secondary fermentation phase can transform water kefir into a bubbly, soda-like drink with even more robust flavours.
Are you curious about what happens to those magical grains after straining? Let’s see how you can store kefir grains for long-term use!
How to store water kefir grains for long-term use?
We often discard leftover parts of dishes—vegetable peelings and the ends of bread. But with water kefir grains, things are different. These tiny organisms are precious and can be reused to brew countless batches of water kefir. However, you must store these grains properly to preserve their quality:
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Refrigeration: Refrigeration is the go-to method when you need to pause brewing for a few weeks. Start by dissolving 1-1/2 teaspoons of sugar in 1/2 cup of water and cooling the mixture. Add the strained grains to this sugar water, transfer everything to an airtight glass container, and store it in the refrigerator.
Swap the sugar water every week to keep the grains active and check for any mould or bad smells. Remember, it might take a few tries for the grains to be at their optimal state after storage.
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Drying: Drying your grains is a great choice if you plan to take a longer break. Begin by rinsing the grains with non-chlorinated water. Then, spread them out in a single layer to air dry or use a dehydrator set to its lowest temperature. Once dry, store them in a clean, dry jar with a tight lid and keep it in a cool, dry place.
Air drying usually requires between three to five days, depending on the environment. Thorough rinsing before drying is essential to avoid mould growth.
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Freezing: Freezing is less common and carries some risks, as grains often struggle to come back to life fully. However, if you choose this method, first dry the grains slightly to reduce moisture and prevent ice damage. Put the grains in a container or freezer bag, add a touch of sugar water, and ensure it's sealed tightly. Place the container in a deep freezer for consistent temperature.
When you're ready to use them, thaw the grains in the fridge and then let them soak in fresh sugar water. It may take a few fermentations for the grains to regain their full strength.
Does the mention of sugar water give you a sugar rush? Watch this video to learn why sugar might not be as bad as you think!
Now that you’ve got your grains safely tucked away, let's talk about keeping your water kefir fresh and tasty!
Choosing the right container for storage
Has that bottle of homemade water kefir that you saved up for a special occasion become spoiled? You probably didn’t choose the right container to store it in. Glass containers stand out as the most suitable choice for storing kefir:
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Non-reactive: Glass is non-reactive, meaning it doesn’t interact with the acidic nature of water kefir. This helps preserve the beverage's flavour and integrity. Unlike other materials, glass does not leach chemicals, providing a safe environment for this probiotic-rich beverage.
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Airtight: Glass containers typically seal tightly, preventing air exposure and minimising the risk of contamination from external sources. It maintains the freshness and carbonation of the beverage, which is vital for both its taste and safety.
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Convenient: The ease of obtaining and cleaning glass containers further enhances their appeal. They can be sanitised easily, which is pivotal in ensuring that your water kefir remains potent and safe to consume.
Pressure-resistant glass bottles, such as those with swing-top lids or Grolsch-type bottles, jars, or carafes, are ideal for storing water kefir. However, it’s best to look for 1 to 1.5-litre wide-mouth containers for easy access and cleaning.
Are you ready to choose the perfect container? Let's explore why plastic might not be your best bet.
Can water kefir be stored in plastic containers?
Plastic bottles are convenient and easily available, but are they truly the best choice for preserving the integrity of your homemade brew? Not exactly! Let’s find out why plastic is not recommended for storing water kefir:
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Undesirable chemicals: Harmful chemicals like BPA and other contaminants can leach into the beverage from the plastic, compromising the quality of the kefir and potentially harming the kefir grains. Plastic can also absorb odours and flavours, which might alter the taste of the kefir over time.
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Easily damaged: Scratches on plastic can harbour bacteria, increasing the risk of contamination. Furthermore, plastic is generally less durable under the pressure created by the fermentation process, which can result in leaks or even container bursts.
So, what if you have to store water kefir in a plastic container? In some cases, short-term storage (a few hours or overnight) in food-grade plastic containers that are BPA-free and specifically designed for beverage storage (such as swing-top bottles) may be acceptable. However, it's always best to err on the side of caution.
Exploring other options for storing water kefir
Do you think glass and plastic are the only materials available to store water kefir? Well, you’ll be surprised to find out that containers made of ceramic, metal, and porcelain are also within your reach. Let’s see how they compare against each other and pick out the best one:
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Ceramic: Ceramic containers can sometimes contain lead in their glaze, which can leach into the kefir, making it unsafe to drink. So, choose ceramic containers specifically designed for food use with a non-reactive, food-grade glaze.
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Porcelain: High-quality porcelain is often lead-free and safe for food use. Porcelain is generally more durable than ceramics, making it less prone to cracking. However, choose food-grade porcelain over vases or pottery.
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Crystal: Many crystal types contain lead, which can leach into the kefir. Consuming lead can have serious health consequences.
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Metal: Many metals can react with the kefir, altering its taste and potentially introducing harmful substances. While stainless steel is often considered safe for food use, it can still react with acidic liquids like kefir over time.
Hence, glass remains the safest and most recommended option for long-term storage of water kefir. Plus, it’s an eco-friendly choice!
If you’re on the lookout for a more targeted way to introduce beneficial bacteria into your gut, The Good Bug’s probiotics are your go-to options.
With storage sorted, let's check out some extra tips to make sure your kefir’s always top-notch.
Additional tips for storing water kefir
In the world of water kefir, the right storage practices are as vital as the brewing process itself. Several factors play a crucial role in preserving your kefir. Here are some additional tips to ensure your water kefir stays fresh and flavourful:
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Ensure cleanliness: Thoroughly clean your containers between batches with mild soap and warm water, making sure to rinse and dry them properly to avoid contamination. Bad bacteria can ruin a good batch, so maintaining this standard is essential for a healthy brew.
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Maintain the right temperature: For optimal fermentation and storage, keep water kefir at a stable temperature between 68-77°F (20-25°C). Extremes in temperature can affect fermentation rates, leading to spoilage or an off-flavour.
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Pay attention to light sensitivity: Store your water kefir in a dark place, away from direct sunlight. Light can fuel unwanted microbial growth, which can affect flavour and spoil your batch. If you use transparent containers, wrap them with cloth or paper to block out light and preserve your beverage.
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Opt for airtight containers: After each use, ensure your kefir container is tightly sealed. This prevents air exposure and contamination, keeping your kefir fresh and potent.
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Use clean utensils: Always use clean utensils when handling kefir. Avoid using metal spoons, as metals can react with the acids in kefir. Opt for plastic or wooden utensils instead. This practice helps maintain the purity of kefir and prevents the introduction of harmful bacteria.
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Make kefir in small batches: Making smaller batches of kefir not only reduces the risk of spoilage but also ensures you consume it fresh. Smaller batches also fit more easily into glass jars, making it easier to find suitable storage space in your refrigerator.
Do you now understand what happens if you store water kefir in plastic containers? If so, it's time to ditch the plastic and embrace the benefits of glass! By following the tips outlined in this blog, you can ensure that your water kefir remains fresh, flavourful, and brimming with beneficial bacteria.
Remember to prioritise safety and always choose storage methods that protect the integrity of your homemade brew. Now go forth and enjoy the refreshing goodness of your homemade water kefir!
Are you too tired to make one? The Good Bug has a tastier solution. We introduce Ferments, a curated collection of fermented probiotic beverages and teas bursting with flavour and gut-loving live cultures! Visit our website to shop for our fruity treats!
References
https://culturesforhealth.com/blogs/learn/water-kefir-choosing-equipment-for-making-water-kefir
https://revolutionfermentation.com/en/blogs/water-kefir/which-equipment-making-water-kefir/
https://www.thetasteofjapan.com/en/storing-water-kefir-crystals/
https://www.livekefircompany.co.uk/how-to-store-kefir-properly-for-maximum-freshness/
