This is a tasty way to get more offal in your diet. Heart is a great source of iron, vitamin B12, zinc, and coenzyme Q10 (CoQ10), which is fundamental for the electron transport chain of mitochondria (the energy-producing cells in your body). Get chicken hearts from pastured chickens if possible (Feather and Bone is a great source) and fire up your grill for this twist on classic Peruvian street food (the original version uses cow’s heart). If you’re not keen on eating heart you can try this version with kangaroo.