Must be cooked thoroughly. Do not place this bag in microwave. Stove Top Directions: Open package and pour frozen kale into a saucepan. Cover with water. Boil for 3 minutes. Reduce heat, cover and simmer 15-20 minutes. Add additional water if needed. Drain. For Food Safety: keep frozen until ready to cook; do not refreeze; heat to 165 degrees F before use; refrigerate leftovers.