Sukuma wiki, also known as collard greens or kale, is a leafy green vegetable widely consumed in East Africa, particularly in Kenya and Tanzania. It's a staple food, often cooked with onions and spices, and served with ugali (a maize flour porridge). Sukuma wiki is known for its nutritional value, being a good source of vitamins A, C, and K, as well as fiber, iron, and antioxidants.