While Chipotle specializes in custom bowls and burritos, they tend to use basic ingredients like white or brown rice, chicken, salsas, and veggies. On the other hand, Taco Bell is unleashing their full creative potential with Forbidden black rice. This "ancient grain" was only consumed by the emperors of ancient China in the past, hence where its name comes from. It has since become very popular in both China and worldwide, as it is prized for its high level of antioxidants. Forbidden black rice is also a great source of protein and minerals like manganese and molybdenum.