Turmeric Powder, a bright yellow spice from the rhizome of the curcuma longa plant, has a long history of traditional Ayurvedic usage. Turmeric Powder is made from dry turmeric rhizomes. Turmeric's main ingredient is 'curcumin' which exhibit a wide range of medicinal activities. Turmeric is useful for its cosmetic and medicinal properties. The yellow color of turmeric is due to curcumin and related compounds.