Spinach

Family Amaranthaceae. Spinach has a high nutritional value, including iron, calcium, vitamin K, and protein. Cooking Spinach breaks down oxalic acid, making the nutrients available. Fun fact, as a member of the order Caryophyllales, Spinach has more in common with cactus than with many flowering plants, with their red pigments called betalains instead of the more common anthocyanins.