Cooked collards (see preparation above) can be frozen in plastic freezer bags for up to 4 to 6 months. Fresh collards can also be frozen. Learn more about freezing greens. Learn more about freezing ...

Add collard greens and sauté 2 minutes ... Bring to a boil, lower heat and simmer 35 minutes. Add sliced cabbage, agave and liquid smoke. Cook over low heat 15 minutes more.