There are two kinds of packing: solid-pack and loose-pack. To solid-pack produce, place prepared food in the desired container and freeze. Solid-packing conserves space and is useful when planning to use large batches of frozen vegetables or fruit at one time. To loose-pack, freeze one layer of fruit or vegetables on a cookie sheet. Once the produce is frozen, transfer it to the storage container. Loose-packing takes up more space, but it is easier to remove just the amount desired, such as a handful of peas or a cup of raspberries.
Be sure to leave head space (open space at the top of the freezer container) when solid packing produce, as foods expand as they freeze. When loose-packing frozen foods, headspace is not necessary as the foods are already frozen. Moisture or food on the sealing edges of the container will prevent proper sealing, so wipe all edges clean before sealing. Label each container with the name and date packaged. Most frozen produce will keep for 8 to 12 months.