Rinse the cabbage head thoroughly and then soak it for 30 minutes in cold water to remove grit or cabbage worms.
Cutting your cabbage in wedges requires that you leave the cores intact. That way, your leaves are still intact until you use them.
Get a large pot and fill it with water. Bring it to a boil over high heat. Add your cabbage pieces once the water boils. Boiling the cabbage will eliminate the presence of bacteria and stop enzymes’ action, enabling the cabbage to store well in your freezer.
If you have cabbage wedges, blanch them for three minutes. You can blanch cabbage shreds for one and a half minutes.
Remove the boiled cabbages and place them in an ice bath. This stops the cooking process and locks in the green color.
Pull the boiled cabbage out as soon as the boiling time is over and place them in a bowl of iced water to stop them from cooking any further.
Pull out your cabbage from the iced water and get rid of the dripping water. If the cabbage is dry, it will less likely have a freezer burn. Flash freeze the cabbage, place them on a cookie sheet before you place them in the freezer. Doing so will prevent them from sticking to each other or having freezer burn. Flash freezing the cabbage will take two hours.
Place them in freezer-safe plastic bags. Remove as much air as you can from your plastic bags before sealing them.
Label them and write the date of their storage. Place the cabbage-filled plastic bags into your freezer, and that’s it!