Look for bright maroon/red/purple leaves that are fresh, young, moist, and tender. Leaves that are injured, torn, dried, limp, or yellowed indicate poor quality.
Store unwashed in the coldest section of the refrigerator for no more than 2-3 days.
Fat free, saturated fat free, cholesterol free, very low in sodium, an excellent source of vitamin K, a good source of vitamin C, folate and copper.