Kali Haldi (Black Turmeric, Curcuma caesia) is a rhizome with a dark bluish-black interior and an earthy, slightly bitter flavor. Native to India, it belongs to the ginger family. Kali Haldi contains natural plant compounds such as curcuminoids and essential oils. It is sometimes used as a spice or coloring agent in culinary preparations and is valued for its unique color and aroma.