
Sourdough is a bread with a long history, dating back to ancient Egypt. Many people have a sourdough starter passed down through their family for generations. One question that often comes up is about the best kind of jar to store your sourdough starter. While some people use plastic containers, others argue that glass jars are superior. Plastic containers are non-reactive and help insulate the starter from extreme temperature changes. However, plastic can be porous, degrade over time, and leach into the starter, affecting its taste. Glass jars, on the other hand, are wide-mouthed, making it easier to remove the starter and clean the container. They are also made from certified food-grade glass, ensuring safety and providing a clear view of the starter's progress.
| Characteristics | Values |
|---|---|
| Containers for sourdough starter | Plastic containers, glass containers, glass jars |
| Benefits of plastic containers | Non-reactive, insulate against extreme temperature changes, easily accessible |
| Downsides of plastic containers | Can pick up colours and odours, porous, may contaminate the starter, may degrade over time and leach into the starter |
| Benefits of glass containers | Wide-mouthed, easier to clean, aesthetically pleasing |
| Other storage methods | Breadbox, paper bag, plastic bags, freezer |
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What You'll Learn
- Plastic containers are non-reactive and help insulate sourdough from extreme temperature changes
- Plastic can be porous and may not withstand high temperatures, risking contamination
- Glass jars are aesthetically pleasing and easier to clean than plastic containers
- Glass jars are made from certified food-grade glass, ensuring safety
- Plastic containers can be used for storing sourdough, but they may pick up colours and odours

Plastic containers are non-reactive and help insulate sourdough from extreme temperature changes
Sourdough enthusiasts often debate the best type of container to store their starter. While glass containers are popular, plastic containers can be used to store sourdough.
Plastic containers are non-reactive, meaning they won't leach into the sourdough starter and alter its taste. This is a common issue with plastic containers, as plastic can degrade over time and negatively impact the flavour of the starter. However, non-reactive plastic containers are available and can be used safely.
Another advantage of plastic containers is their ability to insulate the sourdough from extreme temperature changes. This insulation helps to maintain a stable environment for the yeast, which can be sensitive to rapid temperature fluctuations.
It is important to choose food-safe plastic containers that are new or have only been used for food storage previously. This helps to avoid any unwanted odours or contaminants affecting the sourdough.
While plastic containers have these benefits, some bakers prefer glass containers due to their wide mouths, which make it easier to remove the starter and clean the jar. Additionally, glass jars are aesthetically pleasing, allowing bakers to admire their starter as it develops.
Ultimately, the choice between plastic and glass containers depends on the baker's preferences and priorities. Both options can effectively store sourdough starters with proper care and maintenance.
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Plastic can be porous and may not withstand high temperatures, risking contamination
Plastic containers are non-reactive and help insulate sourdough from extreme temperature changes that can shock the yeast. However, plastic can be porous and may not withstand high temperatures, risking contamination. Plastic containers can also absorb colours and strong odours from the sourdough or other substances stored in them, like garlic and chilis.
Plastic containers are therefore not ideal for sourdough starters. One source notes that plastic degrades over time and can leach into the starter, giving it a "funky taste". Glass jars are recommended as they are wide-mouthed, making it easier to remove the starter from the jar, and easier to clean. Glass jars are also less likely to contaminate the starter, as they can withstand higher temperatures.
However, some sources suggest that plastic containers can be used for storing sourdough, as long as they are food-safe and not repurposed from non-food use. It is also recommended to buy a new plastic container to avoid picking up any harsh scents that may have attached themselves to previously used containers.
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Glass jars are aesthetically pleasing and easier to clean than plastic containers
Glass jars are a popular choice for storing sourdough starters. They are aesthetically pleasing, especially when filled with bubbling sourdough. Glass jars are also practical, as they are easier to clean than plastic containers. Their wide mouths make it simple to remove the starter from the jar and to scrub the jar clean.
Glass jars are made from certified food-grade glass, which means they are safe for any food or beverage. They are also non-porous, unlike plastic, which can be porous and may not withstand high temperatures. Glass jars are therefore less likely to contaminate your starter. Glass is also a good choice because it does not degrade over time and leach into the contents of the jar, which can give your sourdough a funky taste.
Some bakers prefer to use plastic containers with lids for their sourdough starters. Plastic containers are non-reactive and help insulate the starter from extreme temperature changes that can shock the yeast. However, plastic containers can pick up colours and odours from the sourdough or other foods stored in them, which can be a downside.
If you are using plastic containers, it is best to use a new container to avoid any harsh scents that may have attached themselves to previously used containers. It is also important to ensure that the plastic is food-safe and not repurposed from non-food use.
Ultimately, the choice between glass and plastic containers for sourdough starters is a matter of personal preference. Both options can work well, as long as the container is cleaned properly and the starter is stored correctly.
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Glass jars are made from certified food-grade glass, ensuring safety
Glass jars are the best way to store your sourdough starter. They are made from certified food-grade glass, ensuring safety and peace of mind. This means that they are safe for any food or beverage you wish to store in them. Glass jars are also aesthetically pleasing, and you can keep an eye on your starter's progress. They are also easy to clean and wide-mouthed, making it simple to transfer your starter out of the container.
While some bakers do use plastic containers for their sourdough starters, there are some downsides to this. Plastic can degrade over time and leach into the contents of the jar, potentially giving your sourdough a strange taste. Plastic can also be porous and may not withstand high temperatures, which could contaminate your starter. Plastic containers can also absorb colours and odours from previous contents, which may be unpleasant.
If you are considering using a plastic container, it is best to use a new one, specifically designed for food storage, to avoid any contamination.
Glass jars with airtight clamps are a great option for storing your sourdough starter. They are safe, easy to use, and you can keep an eye on your starter's progress.
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Plastic containers can be used for storing sourdough, but they may pick up colours and odours
Sourdough can be stored in plastic containers, but there are some potential drawbacks. Plastic containers are non-reactive and help insulate the sourdough from quick and extreme temperature changes that can shock the yeast. They are also readily available, often have wide mouths, and are lightweight and easy to handle.
However, plastic containers can pick up colours and odours from the sourdough or other foods stored in them. For example, garlic and chiles are known to leave strong scents in plastic containers. To avoid this, it is recommended to use a new plastic container for sourdough to prevent the transfer of harsh scents from previously stored foods. Plastic containers can also be porous, making them more susceptible to contamination, and may not withstand high temperatures, potentially affecting the activity of the sourdough starter.
Glass containers are often recommended as an alternative to plastic. They are aesthetically pleasing, easy to clean, and wide-mouthed, making it simpler to remove the sourdough. Glass is also less susceptible to degradation over time, which can cause plastic to leach into the sourdough and affect its taste.
Ultimately, while plastic containers can be used for storing sourdough, they may pick up colours and odours, and other considerations should be kept in mind when making a choice between plastic and glass containers.
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Frequently asked questions
Yes, you can store sourdough in plastic containers. Plastic containers are non-reactive and help insulate your starter from quick and extreme temperature changes. However, plastic containers can be porous and may not withstand high temperatures, which can contaminate your starter. They can also pick up colours and odours from your sourdough or other foods.
Glass containers are aesthetically pleasing and easier to clean than plastic. They are also more wide-mouthed, which makes removing the starter from the jar easier. Glass containers are also less likely to contaminate your starter than plastic.
Sourdough bread can be stored in a breadbox, a paper bag, or a plastic bag (not completely sealed). You can also slice and freeze the bread in plastic bags.











































