
There are many options for containers to store sourdough starters, including glass, ceramic, and plastic containers. While some bakers prefer glass containers due to concerns about plastic containers becoming scratched and harbouring bacteria, others opt for plastic because it is easily cleaned, cost-effective, and less likely to crack or break. Ultimately, the choice of container depends on the baker's preference, and there is no significant difference as long as the container is properly cleaned and food-safe.
| Characteristics | Values |
|---|---|
| Container material | Plastic containers are commonly used for sourdough starters, but some prefer glass or ceramic containers. |
| Container type | Wide-mouth jars are recommended for easy access and maintenance. |
| Lid type | Loose-fitting or screw-on lids are preferred, with plastic lids being easier to clean and longer-lasting. |
| Container size | Medium-sized jars are ideal, typically holding between 100g and 200g of sourdough starter. |
| Reusability | Containers should be reusable and made of food-safe, BPA-free plastic to prevent bacterial growth and contamination. |
| Ease of cleaning | Plastic containers are easy to clean, but they may harbour bacteria in scratches over time. |
| Durability | Plastic containers are less likely to crack or break compared to glass. |
| Visual access | Glass containers allow for visual monitoring of the sourdough starter's progress, while opaque plastic containers may not. |
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What You'll Learn
- Plastic containers are cost-effective, easily cleaned, and reusable
- Glass jars are preferred by some for ease of cleaning and to avoid potential chemical leaching
- Plastic containers may be porous and less heat resistant, increasing the risk of contamination
- Glass jars allow you to see the fermentation process and monitor for any issues
- Plastic containers are less likely to crack or break from a growing starter

Plastic containers are cost-effective, easily cleaned, and reusable
Plastic containers are a popular option for storing sourdough starters. They are cost-effective, easily cleaned, and reusable, making them a convenient choice for many bakers. Deli containers, for example, are commonly used and can be found in professional bakeries due to their toughness and versatility.
One of the main advantages of using plastic containers is their affordability. Plastic containers are typically less expensive than glass or ceramic options, making them a budget-friendly choice for those looking to start baking sourdough. Additionally, plastic containers are lightweight and durable, reducing the risk of cracking or breaking if dropped or handled roughly.
Ease of cleaning is another benefit of plastic containers. They can be easily washed and reused multiple times, making them a hygienic option for storing sourdough starters. Plastic containers are also non-reactive, which means they won't negatively affect the sourdough starter, ensuring the starter's quality remains intact.
Reusability is a key feature of plastic containers. They can be used multiple times for various kitchen tasks, including storing and sharing sourdough starters with fellow bakers. This promotes a more sustainable practice by reducing waste and encouraging the sharing of knowledge and ingredients within the baking community.
However, it is important to choose food-safe, BPA-free plastic containers to ensure the safety of the sourdough starter. Additionally, some bakers may prefer containers with wide mouths for easier access, stirring, and feeding of the starter. While plastic containers are convenient, they may not offer the same level of visibility as glass containers, making it slightly more challenging to monitor the fermentation process visually.
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Glass jars are preferred by some for ease of cleaning and to avoid potential chemical leaching
Glass jars are a preferred choice for storing sourdough starters by some bakers. Glass containers offer a clear view of the fermentation process, allowing bakers to monitor the activity inside easily. This visibility is advantageous when getting familiar with the starter and making necessary adjustments. Additionally, glass is non-porous, reducing the risk of contamination and making it easier to clean and maintain.
One of the primary concerns with plastic containers is the potential for chemical leaching. Plastic containers may release chemicals into the sourdough starter over time, which some bakers prefer to avoid. Glass, being inert, does not pose this potential issue. It is worth noting that food-safe plastic containers are available, and some bakers use them without issue. However, it is essential to choose BPA-free and reusable options.
Another advantage of glass jars is their durability. They are less likely to crack or break due to the expanding starter, ensuring a longer lifespan. Glass jars are also microwave and dishwasher-safe, making them convenient for various kitchen tasks. Their smooth surfaces make them easy to scrape and clean, ensuring proper hygiene for the sourdough starter.
While glass jars are favoured by some bakers, plastic containers have their advantages, too. Plastic containers are lightweight, cost-effective, and readily available. They are also excellent for sharing sourdough starters with fellow bakers due to their reusability and ease of transportation. Plastic containers with wide mouths are especially useful for this purpose, making it easier to access the starter and maintain proper hygiene.
Ultimately, the choice between glass and plastic containers depends on personal preference and specific baking needs. Glass jars offer visibility, ease of cleaning, and peace of mind regarding chemical leaching. However, plastic containers are widely used and provide convenience, portability, and cost savings.
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Plastic containers may be porous and less heat resistant, increasing the risk of contamination
Plastic containers are a commonly used option for sourdough starters. They are easily cleaned, reusable, and cost-effective. However, concerns have been raised about the potential for contamination when using plastic containers for sourdough starters.
One issue is that plastic containers may be porous, allowing bacteria to penetrate the surface and contaminate the starter. Over time, plastic containers can also break down due to the acidity of the sourdough starter, potentially leaching chemicals into the mixture. Additionally, plastic containers may have scratches that can harbour bad bacteria, further increasing the risk of contamination.
Another factor to consider is the heat resistance of plastic containers. They may not withstand high temperatures as well as glass jars, which can be important when dealing with the warmth generated during the fermentation process. If the plastic container cannot handle the heat, it may melt or warp, compromising the integrity of the starter.
To mitigate these risks, it is essential to choose food-safe, BPA-free plastic containers that are specifically designed for food storage. Reusable containers are preferable to single-use plastic, reducing the likelihood of contamination. Proper cleaning and maintenance of the container are also crucial to prevent bacterial growth and ensure the longevity of the sourdough starter.
While plastic containers may be convenient and affordable, it is important to be vigilant about their potential drawbacks. By selecting the right type of plastic and practising good hygiene, bakers can minimise the risk of contamination and successfully use plastic containers for their sourdough starters.
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Glass jars allow you to see the fermentation process and monitor for any issues
Glass jars are a popular choice for sourdough starters because they offer visibility into the fermentation process. This visibility is crucial for monitoring the starter's progress and identifying any potential issues. With a glass jar, you can easily observe the bubbles, foam, and liquid separation that occur during fermentation. Early detection of any problems can help prevent the starter from spoiling.
Additionally, glass jars provide an ideal environment for sourdough starters due to their non-porous nature. Glass is non-reactive, meaning it won't leach chemicals or contaminants into the starter. This ensures that the starter remains pure and safe for consumption. Glass is also known for its durability and resistance to scratching, reducing the risk of harbouring harmful bacteria.
While plastic containers are a common alternative, they may not offer the same visibility into the fermentation process. Plastic can be porous, potentially impacting the predictability of the starter's activity. However, some bakers prefer plastic containers for their cost-effectiveness, ease of cleaning, and reusability.
When choosing a container for your sourdough starter, consider the advantages of glass jars. They provide a clear view of the fermentation process, allowing you to monitor the starter's progress and identify any issues promptly. Additionally, glass offers a non-reactive and durable solution, ensuring the purity and safety of your sourdough starter.
Ultimately, the choice between glass and plastic containers depends on personal preference and specific baking needs. However, for bakers who want to closely observe the fermentation process and maintain a high level of control over their sourdough starters, glass jars are an excellent option.
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Plastic containers are less likely to crack or break from a growing starter
Glass is the most popular choice for storing sourdough starters, as it is easy to clean and allows you to see the fermentation process. However, plastic containers are also a common option. Deli containers, for example, are easy to clean, reusable, and cost-effective. They are also less likely to crack or break from a growing starter. This is because the gaseous byproducts of fermentation can lead to high pressure inside the jar, which could cause a glass jar to crack. Fermentation lids are also available to reduce the risk of cracking or shattering from pressure build-up.
Plastic containers are a good option for storing and sharing sourdough starters with friends. They are lightweight and less likely to break during transportation. However, it is important to choose food-safe plastic that is BPA-free and reusable. Plastic can become scratched, harbouring bad bacteria, so proper cleaning is essential.
While plastic containers offer convenience and durability, some bakers prefer glass jars for their sourdough starters. Glass provides excellent visibility, allowing bakers to monitor the fermentation process closely. It is also non-porous and withstands high temperatures, reducing the risk of contamination. Glass jars are typically heavier and more expensive than plastic containers, but they offer peace of mind regarding food safety and longevity.
In summary, plastic containers are a viable option for storing and sharing sourdough starters. They are less likely to crack or break from a growing starter and offer the advantages of cost-effectiveness, lightweight construction, and ease of cleaning. However, proper cleaning and the choice of food-safe plastic are crucial to ensuring the safety and quality of the sourdough starter.
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Frequently asked questions
Yes, it is okay to use a plastic container for sourdough starters. Plastic containers are commonly used by bakers and are easily cleaned, reused, and cost-effective. However, plastic containers may not withstand high temperatures and could be porous, which may lead to contamination.
Plastic containers are easily cleaned, reused, and cost-effective. They are also less likely to crack or break from a growing starter. Plastic containers are also better for sharing sourdough starters with friends.
Plastic containers may not withstand high temperatures and could be porous, which may lead to contamination. Plastic can also become scratched and harbor bad bacteria. Additionally, some people may prefer to avoid using plastic due to environmental concerns.



















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