
Freezer jam can be stored in glass or plastic containers. Glass jars with straight sides and wide mouths are suitable, as they can withstand the expansion of the liquid inside as it freezes. Plastic containers should have tight-fitting lids and be sealable, with enough room left at the top for the jam to expand. Plastic containers can be purchased or reused, and they can also be substituted with sealable bags.
| Characteristics | Values |
|---|---|
| Container type | Plastic containers or glass jars |
| Container size | Small 1/2 cup or 1 cup containers |
| Container preparation | Wash with hot, soapy water or rinse with water |
| Headspace | Leave 1/2 inch of space at the top to allow for expansion |
| Storage | Store in the freezer for up to one year |
| Thawing | Thaw frozen jam overnight in the refrigerator |
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What You'll Learn

Plastic containers are safe to freeze jam in
Freezer jam can be stored in plastic containers. In fact, any container can be used to freeze jam as long as it is freezer-friendly and has a tight-fitting lid. Plastic containers are a good option as they are lightweight, durable, and easy to store. They are also inexpensive and widely available.
When freezing jam, it is important to leave a small amount of headspace at the top of the container to allow for expansion. This is because the liquid will expand as it freezes, and if there is no room for this expansion, the container may break. Glass jars, for example, can break if there is no room for expansion, creating a dangerous mess. Plastic containers are less likely to break than glass if the jam expands, making them a safer option.
Small, half-cup, or one-cup plastic containers with tight-fitting lids are perfect for freezing jam. It is important to ensure that the containers are clean and dry before filling them with jam. The jam should be allowed to stand at room temperature for 24 hours before being stored in a freezer.
Freezer jam can be stored in the freezer for up to one year. It is important to label the containers with the date and to thaw the jam overnight in the refrigerator before using it. If the jam has separated, it can be stirred to blend it back together.
Overall, plastic containers are a safe and convenient option for freezing jam. They are lightweight, durable, and easy to store, and they reduce the risk of breakage associated with glass containers. By following the proper steps for preparing and storing freezer jam, you can safely enjoy your homemade creation for up to a year.
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Glass jars are a popular choice for freezing jam
Freezer jam is a simple and delicious way to preserve summer fruits without the need for heat canning. It is a great option for those who are intimidated by the traditional canning process or who want to avoid the use of heat. By freezing jam, individuals can enjoy the fresh taste of summer fruits all year round. Glass jars are a popular choice for storing freezer jam, as they can be sealed tightly and safely frozen.
Some people prefer to use glass jars for their freezer jam because they consider it a precursor to heat canning. The process of making freezer jam is very similar to that of heat canning, except that the jars are not boiled. This means that individuals can avoid the risks associated with sterilization and storing at room temperature. Glass jars are also aesthetically pleasing and can be decorated with ribbons or other embellishments, making them a popular choice for gifting.
When using glass jars for freezing jam, it is important to use straight-sided jars with a wide mouth, rather than jars with a curvature below the lid. This is because the liquid expands as it freezes, and the straight sides help to prevent breakage. It is also crucial to use freezer-tempered or freeze-safe glass jars that can withstand freezing temperatures. Regular glass can handle freezing well but may break if subjected to quick temperature changes.
Overall, glass jars are a popular and effective option for freezing jam. They offer a safe and aesthetically pleasing way to store and preserve jam, as long as they are filled correctly and left with enough space for expansion. By using glass jars, individuals can enjoy the taste of summer all year round and even share their homemade creations with friends and family.
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Plastic containers should have tight-fitting lids
When freezing jam, it is important to use containers with tight-fitting lids. This is because the jam needs room to expand as it freezes, and a tight-fitting lid will help to prevent leaks and spills. Additionally, a secure seal will help to keep the jam fresh and prevent it from drying out or spoiling.
Most sources recommend leaving a 0.5-inch gap at the top of the container to allow for expansion. One source suggests that, if using a glass jar, a straight-sided jar with a wide mouth is preferable to one with "shoulders", as the curvature of the latter may cause the jar to break as the contents expand during freezing.
Plastic containers with tight-fitting lids are ideal for freezing jam. Small 0.5-cup or 1-cup containers are perfect, and these can be purchased or may already be hiding in your cupboards. If you are short on space, you can also store jam in quart-size zippered bags. Simply add a cup of jam to each bag, seal well, label, and store the bags flat on top of each other.
It is worth noting that glass jars can also be used to freeze jam, although there is a risk of breakage due to the expansion of the contents. However, one source mentions that they have been using glass jars for freezing jam for 40 years without any breakages. Glass jars can add a nice touch if you are planning to gift your jam, and they are also useful for storing thawed jam, which should not be kept at room temperature.
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Leave room at the top of the container for jam to expand
When freezing jam, it's important to leave room at the top of the container to allow for expansion. This is because the jam will expand during the freezing process, and if the container is too full, it may break or spill.
For glass jars, it is recommended to leave a 1/2-inch headspace at the top of each jar. Plastic containers with tight-fitting lids are also suitable for freezing jam, and it is important to choose containers with a capacity of 1/2 cup or 1 cup. These containers are perfect for storing jam in the freezer, and their tight-fitting lids help to prevent spills or messes in the freezer.
If you are using a Mason jar, it is important to choose a straight-sided jar with a wide mouth, rather than a jar with a curvature beneath the lid. This is because the curvature can cause the jar to break when the jam expands during freezing.
Additionally, it is worth noting that freezer jam should not be stored at room temperature, as it will spoil. It is recommended to store freezer jam in the refrigerator for up to 3 weeks or in the freezer for up to 1 year.
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Plastic containers can be sealable or zippered bags
Plastic containers are a great option for freezing jam. They are lightweight, durable, and can be sealable or zippered bags, making them convenient for storage and transportation. Here are some tips for using plastic containers for freezing jam:
- Sealable Plastic Containers: Choose sealable plastic containers with tight-fitting lids to ensure that your jam stays fresh and does not leak. Make sure the containers are specifically designed for freezer-friendly use, as this will help maintain the integrity of the container and its contents during freezing temperatures. Look for containers made of durable, freezer-safe plastic, such as polypropylene or polyethylene.
- Container Size and Headspace: Opt for small containers ranging from 1/2 cup to 1 cup in size. This portion size is convenient for individual use or small households. Remember to leave about 1/2 inch of headspace at the top of each container to allow for the expansion of the jam as it freezes. This expansion room is crucial to prevent cracking or breaking of the container.
- Zippered Bags: If you're short on freezer space, consider using quart-size zippered bags. Simply add a cup of jam to each bag, seal it tightly, and label it clearly. Zippered bags lay flat on top of each other, maximising the use of freezer space. When you need jam, take out a bag, thaw it, and then transfer the contents to a jar or container.
- Cleaning and Preparation: Before filling the containers, wash them thoroughly with hot, soapy water and rinse them well. Alternatively, you can run them through the dishwasher to ensure they are clean and sterile. Ensure the containers are completely dry before filling them with jam. It's also important to let the jam cool down before filling the containers, especially if you're using zippered bags, as hot jam can damage the bags and affect sealing.
- Labelling and Storage: Clearly label your plastic containers with the date and contents. Store the containers in the freezer, where they can last for up to a year. When you need to use the jam, simply take out a container, thaw it overnight in the refrigerator, and stir the contents if any separation has occurred. Always follow food safety guidelines and consume the jam within a reasonable timeframe after thawing.
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Frequently asked questions
You can use any sealable plastic containers. It is important to leave a 1/2-inch gap at the top of the container to allow for expansion.
Small 1/2-cup or 1-cup containers are perfect for freezing jam.
Yes, you can use quart-size zippered bags. Add a cup of jam to each bag, seal them well, label them, and store them flat on top of each other.
Glass jars are a great alternative to plastic containers for freezing jam. You can use Mason jars or any freezer-tempered jar.
You can store jam in plastic containers in the freezer for up to one year.
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