What Are Collard Greens Rich In?

What Are Collard Greens Rich In? Collard greens are an excellent source of vitamin A, vitamin C, and calcium, a rich source of vitamin K, and a good source of iron, vitamin B-6, and magnesium. They also contain thiamin, niacin, pantothenic acid, and choline. Are cooked collard greens healthy? But, research has proven that steamed