The plum ripening season flies by unnoticed, and the question often arises of how to preserve the crop for the long winter. Freezing in the refrigerator is one of the most effective ways to save up to 90% of nutrients and taste. Unlike making jam or drying, this method requires minimal time and preserves the natural structure of the fruit.
Modern refrigerators with a quick freezing function allow you to create ideal conditions for preparing fruit without losing their presentation. Properly prepared draining in the freezer can be stored for 6 to 12 months, delighting you with a fresh taste even in January. It is only important to follow a few key rules of preparation and temperature conditions.
In this article we will analyze in detail all the nuances of the process, from choosing a variety to proper defrosting before use. You will learn why you should not wash fruits after defrosting and how to avoid the berries sticking together into one big lump. Deep freezing is a simple but technological process that requires attention to detail.
Selecting and preparing plums for freezing
The success of the entire harvesting operation directly depends on the quality of the raw materials. Fruits of medium ripeness, when the pulp is already sweet but still quite dense, are ideal for freezing. It is better to use overripe, soft specimens with damaged skin for jam or compote, since at low temperatures they will turn into porridge.
The first stage is always careful sorting. It is necessary to reject all fruits with signs of rot, wormholes or mechanical damage. Even one spoiled plum can ruin the entire container, transmitting the smell and bacteria to neighboring fruits. High-quality harvest is the key to long-term storage.
After sorting, the fruits must be thoroughly washed under running water. If the plums are homemade or from the country, rinsing alone may not be enough, so it’s worth soaking them in water for 10–15 minutes so that possible insects emerge. It is better to wash store-bought fruits with a soft brush to remove the layer of paraffin or wax with which they are often treated for transportation.
Freezing methods: whole fruits or slices
There are two main ways to prepare plums, and the choice depends on your future plans for using the product. Whole freezing is suitable for varieties with easily separated seeds and dense skin, for example, Hungarian. It is more convenient to freeze large fruits in slices, which are planned to be used for baking or decorating desserts.
When harvesting whole fruits, it is important to remove moisture from the surface as much as possible. To do this, place clean fruits on paper towels in one layer and allow them to dry completely. Excess water will turn into an ice crust, which, when defrosted, will make the skin flabby and watery. Dry surface is a critical success factor.
If you decide to freeze the plum in slices, the process requires more accuracy. The fruit is cut in half along the natural groove and the stone is removed. The halves are also laid out on a flat surface with the cut side up so that they do not stick together during the pre-freezing process. This method is called shock freezing at home.
⚠️ Attention: Never try to freeze under-dried fruits. The remaining moisture will create a layer of ice that will destroy the cellular structure of the fruit when thawed, and you will get a shapeless mass instead of an elastic berry.
Step-by-step instructions for freezing in the refrigerator
The freezing process requires sequential steps to avoid the formation of large ice crystals inside the pulp. First, prepared and completely dry fruits are laid out on a tray, board or flat tray in one layer so that they do not touch each other. This preparation is placed in the freezer for 2-3 hours.
After the plum “sets” and becomes hard as a stone, it can be packaged. Quickly transfer frozen fruit to freezer bags or plastic containers. Try to release the maximum amount of air from the bags before sealing to minimize oxidation. Sealed packaging will prevent the absorption of foreign odors.
☑️ Checklist for preparing plums
For lobed freezing algorithm similar: the halves laid out on a tray are sent to the freezer until completely hardened, after which they are poured into a common container. This step is called “pre-freezing” and is critical to maintaining its shape. If you skip it and put fresh slices in a bag, they will freeze into a single ice briquette, which cannot be separated without damage.
Ready prepackaged packages should be marked with the date of preparation. This will help you follow the order of using stocks and not keep the product longer than expected. It is better to store the preparations in the far corner of the chamber or in a special compartment where the temperature is most stable.
Terms and conditions of storage of preparations
The duration of storage of frozen plums directly depends on the temperature of your freezer. At a standard temperature of -18°C, the fruits retain their properties for up to 12 months. If your refrigerator allows you to set the temperature to -24°C or lower, the period can be extended, but usually one year is enough until the next harvest.
It is important to understand that even at low temperatures, slow oxidative processes occur. The fats contained in the pit (if there is one left) and the skin can become rancid over time, changing the taste. Therefore meeting deadlines storage is a prerequisite for obtaining a quality product.
The following is a table of the dependence of shelf life on temperature:
| Temperature, °C | Maximum period storage | Safety of vitamins | Risks |
|---|---|---|---|
| -6 ... -12 | up to 3 months | Average | High risk of taste change |
| -18 | up to 12 months | High | Minimum |
| -24 and below | up to 18 months | Maximum | Almost none |
You should not store plums in the refrigerator door if there is a freezer there, since the temperature there fluctuates greatly when the door is opened. Such changes lead to partial thawing and re-crystallization, which is detrimental to the structure of the berry. The ideal place is the deep shelves of the main freezer chamber.
Is it possible to freeze plums with a pit?
You can freeze plums with a pit, but it is not recommended for long-term storage. The pit contains substances that, when in prolonged contact with the pulp, can impart a bitter taste. In addition, the bone takes up useful volume. It is better to remove it before freezing.
Rules for defrosting and use in cooking
Proper defrosting is half the success. In order for the plum to retain its shape and maximum juice, it must be defrosted slowly. The best way is to transfer the required amount of fruit from the freezer to the refrigerator compartment on the bottom shelf and leave it overnight. With this gentle defrosting cell juice does not leak out, but is absorbed back into the pulp.
If the plum is needed urgently for compote or pie filling, you can use it without defrosting. Frozen slices hold their shape well when baking and do not add excess water to the dough. For smoothies or sauces, the fruits can also be thrown into a blender directly from the freezer, which significantly speeds up the preparation process.
It is strictly not recommended to defrost plums in hot water or in a microwave oven at high power. A sharp temperature change destroys the cell walls, and instead of an elastic berry you will get a boiled mass. Microwave permissible only in defrost mode and only if the plum immediately goes for heat treatment.
Common mistakes and ways to eliminate them
One of the most common mistakes is re-freezing. If a plum has been thawed once, its structure has already been damaged, and a second freezing cycle will turn it into a tasteless puree. Moreover, a thawed product is an ideal environment for the growth of bacteria. Re-freezing is strictly prohibited.
Another mistake is using thin food bags instead of specialized freezer bags. Ordinary polyethylene becomes brittle at low temperatures and cracks, allowing air to pass through. This leads to a “frost burn” on the surface of the fruit, the appearance of a whitish coating and loss of moisture.
Also, beginners often ignore the stage of pre-freezing on a tray. By dumping wet or simply prepared slices into a heap, they get a sticky lump. It is impossible to separate it; you have to defrost everything at once, which violates the rules for storing the rest of the stock. Always use the method flash freezing (quick freezing on a tray).
⚠️ Attention: If you notice that a lot of snow crumbs or ice have formed in the bag, this is a sign that the plum was not dry enough before packaging or the temperature in the refrigerator is fluctuating. This plum should be used first.
FAQ: Frequently asked questions
Is it possible to freeze plums in sugar syrup?
Yes, such a method exists and is well suited for dessert varieties. The fruits are poured with 30-50% sugar syrup in a container so that they are completely covered. This helps preserve color and texture, but increases the calorie content of the product and takes up more space in the freezer.
Why did the plum turn brown after defrosting?
Darkening of the pulp indicates oxidative processes. This could happen if the plum was overripe, if it was left exposed to air for a long time before freezing, or if the packaging was not sealed. To prevent this, you can sprinkle the slices with lemon juice before freezing.
How long does it take to blast freeze plums?
The time depends on the power of your refrigerator and the size of the fruit. Typically pre-frozen on a tray requires 2 to 4 hours at -18°C. If the refrigerator has a “Super Freeze” function, the process can take only 1-2 hours.
Is it possible to freeze plums along with other berries?
Technically it is possible, but it is not recommended to mix different types of fruits in one container until packaging. Different berries may have different freezing times and humidity. It is better to freeze them separately on trays, and then mix them in one storage bag, if necessary for compote.