Collard greens:
1.  High in sulfur-containing compounds, collard greens are natural liver cleansers.
2.  High in vitamin C
3.  Has the 100 percent of the daily recommended value of vitamin K.
4.  Excellent source of dietary fiber. 
5.  Good source of iron because they contain 0.5mg of iron per 100g.
6.  Rich in antioxidants and vitamins 
Sold by the bunch,  Tradional collards.