Wash and dry the kale thoroughly. Remove the tough kale stems and chop the leaves into bite-sized pieces.
10 ounces fresh kale
Boil a large pot of water and carefully add the chopped kale. Boil for 2-3 minutes, then immediately transfer the kale to an ice bath (a large bowl of ice water). Let it cool for a few minutes.
Drain the kale thoroughly and pat dry with paper towels or a clean kitchen towel to remove any excess water to prevent freezer burn.
Lay the blanched kale on a large cookie sheet and flash freeze for 20-30 then transfer them to an airtight container or freezer bag and store in the freezer for up to 6 months.
Freezing Fresh Kale
Wash the raw kale and pat it dry really well with paper towels or a clean kitchen towel. Arrange the raw kale in an even layer on a large-rimmed baking sheet and flash freeze for 20-30 minutes. Transfer it to an airtight container or freezer bag and freeze it for up to 6 months.
Notes
Blanched or Fresh? Blanching kale before freezing helps prevent it from developing a bitter taste and it also helps maintain the vibrant green color. If you have the time and tools, it's better to blanch kale before freezing, although both will work.Thawing Frozen Kale: add the frozen kale directly to dishes like stew or soup because it will thaw as it cooks. You can also place frozen kale directly into a smoothie. Thaw the kale overnight in the refrigerator first if you plan to use it in a raw dish, like a salad, or if you plan to saute it because frozen kale will release too much moisture into the pan.Use direct from freezer in soups, smoothies; thaw if using in baking.